WorldCom, Inc.
E216124
WorldCom, Inc. was a major American telecommunications company that became infamous for one of the largest accounting fraud scandals in U.S. corporate history, leading to its bankruptcy and rebranding as MCI Inc.
All labels observed (6)
| Label | Occurrences |
|---|---|
| WorldCom | 30 |
| WorldCom, Inc. canonical | 4 |
| MCI WorldCom | 3 |
| NASDAQ (as WorldCom) | 1 |
| WorldCom Internet operations | 1 |
| WorldCom corporate headquarters | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1937551 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: WorldCom, Inc. Context triple: [MCI Inc., formerName, WorldCom, Inc.]
-
A.
Qwest Communications International
Qwest Communications International was a major U.S.-based telecommunications company that provided local, long-distance, and broadband services before being absorbed into what is now Lumen Technologies.
-
B.
Lucent Technologies
Lucent Technologies was a major American telecommunications equipment company, spun off from AT&T, known for its Bell Labs research arm and contributions to networking and communications technology.
-
C.
NYNEX
NYNEX was a regional Bell operating company that provided telecommunications services in the northeastern United States following the breakup of AT&T.
-
D.
BellSouth
BellSouth was a major American telecommunications company, formerly one of the regional "Baby Bells" created after the breakup of AT&T, providing telephone and related services across the southeastern United States.
-
E.
Ameritech
Ameritech was a regional telecommunications company formed after the breakup of AT&T’s Bell System, serving the Midwestern United States with local and long-distance phone services.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: WorldCom, Inc. Target entity description: WorldCom, Inc. was a major American telecommunications company that became infamous for one of the largest accounting fraud scandals in U.S. corporate history, leading to its bankruptcy and rebranding as MCI Inc.
-
A.
Qwest Communications International
Qwest Communications International was a major U.S.-based telecommunications company that provided local, long-distance, and broadband services before being absorbed into what is now Lumen Technologies.
-
B.
Lucent Technologies
Lucent Technologies was a major American telecommunications equipment company, spun off from AT&T, known for its Bell Labs research arm and contributions to networking and communications technology.
-
C.
NYNEX
NYNEX was a regional Bell operating company that provided telecommunications services in the northeastern United States following the breakup of AT&T.
-
D.
BellSouth
BellSouth was a major American telecommunications company, formerly one of the regional "Baby Bells" created after the breakup of AT&T, providing telephone and related services across the southeastern United States.
-
E.
Ameritech
Ameritech was a regional telecommunications company formed after the breakup of AT&T’s Bell System, serving the Midwestern United States with local and long-distance phone services.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
public company
ⓘ
telecommunications company ⓘ |
| abbreviation | LDDS ⓘ |
| acquired |
ANS Communications
ⓘ
CompuServe Network Services ⓘ MCI Communications ⓘ
linked to:
MCI Inc.
MFS Communications Company, Inc. ⓘ UUNET Technologies, Inc. ⓘ |
| acquiredBy |
Verizon Communications
ⓘ
linked to:
Verizon
|
| acquisitionCompleted | 2006 ⓘ |
| announcedAccountingIrregularities | June 2002 ⓘ |
| bankruptcyJurisdiction |
United States
ⓘ
linked to:
United States of America
|
| bankruptcyType | Chapter 11 ⓘ |
| category | defunct telecommunications company of the United States ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| describedAs |
one of the largest accounting frauds in U.S. history
ⓘ
one of the largest corporate bankruptcies in U.S. history ⓘ |
| emergedFromBankruptcy | 2004 ⓘ |
| facedAllegation |
fraudulent accounting practices
ⓘ
improper capitalization of expenses ⓘ overstating earnings ⓘ |
| filedForBankruptcy | July 21, 2002 ⓘ |
| foundedBy |
Bernard Ebbers
ⓘ
Murray Waldron ⓘ William Rector ⓘ |
| headquartersLocation | Clinton, Mississippi ⓘ |
| impact | led to passage and enforcement emphasis of the Sarbanes–Oxley Act ⓘ |
| inception | 1983 ⓘ |
| industry |
internet services
ⓘ
long-distance telephone services ⓘ telecommunications ⓘ |
| keyPerson |
Bernard Ebbers
ⓘ
Scott Sullivan ⓘ |
| legalOutcomeForExecutive |
Bernard Ebbers convicted of fraud and conspiracy
ⓘ
linked to:
Bernard Ebbers
Scott Sullivan pleaded guilty to securities fraud ⓘ |
| locatedInTimeZone | Central Time Zone ⓘ |
| notableFor |
accounting fraud scandal
ⓘ
corporate bankruptcy ⓘ |
| originalName | Long Distance Discount Service, Inc. ⓘ |
| positionHeld |
Bernard Ebbers – Chief Executive Officer
ⓘ
linked to:
Bernard Ebbers
Scott Sullivan – Chief Financial Officer ⓘ
linked to:
Scott Sullivan
|
| regulatoryAction |
investigated by the U.S. Securities and Exchange Commission
ⓘ
subject to criminal investigation by the U.S. Department of Justice ⓘ |
| renamedAs |
MCI Inc.
ⓘ
WorldCom ⓘ
linked to:
WorldCom, Inc.
|
| reorganizedAs | MCI Inc. ⓘ |
| restatedEarnings | over 11 billion US dollars ⓘ |
| stockExchangeListing | NASDAQ ⓘ |
| successor | MCI Inc. ⓘ |
| tickerSymbol | WCOM ⓘ |
| ultimateFate | acquired by Verizon Communications ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: WorldCom, Inc. Description of subject: WorldCom, Inc. was a major American telecommunications company that became infamous for one of the largest accounting fraud scandals in U.S. corporate history, leading to its bankruptcy and rebranding as MCI Inc.
Referenced by (40)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
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linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
subject linked to:
MCIP
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
subject linked to:
Scott Sullivan cooperated with prosecutors
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.
linked to: WorldCom, Inc.