CA/T
E396352
CA/T is the commonly used abbreviation for Boston’s Central Artery/Tunnel Project, better known as the “Big Dig,” a massive highway and tunnel construction megaproject.
All labels observed (2)
| Label | Occurrences |
|---|---|
| CA/T canonical | 1 |
| CA/T Project | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3870909 — 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: CA/T Context triple: [Central Artery, alsoKnownAs, CA/T]
-
A.
TCAT
TCAT is the public bus transit system serving Ithaca and the surrounding Tompkins County area in New York State.
-
B.
TCA
TCA is the commonly used abbreviation for the Technical Cooperation Administration, a former U.S. government agency responsible for administering foreign aid and technical assistance programs.
-
C.
TCA
TCA is the three-letter ISO 3166-1 alpha-3 country code for the Turks and Caicos Islands.
-
D.
CAC
The Central American Cup (CAC) is a regional football tournament featuring national teams from Central America competing for the championship title.
-
E.
CAC
CAC is the Computing Accreditation Commission, a specialized body that accredits computing-related degree programs to ensure they meet established quality and professional standards.
- 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: CA/T Target entity description: CA/T is the commonly used abbreviation for Boston’s Central Artery/Tunnel Project, better known as the “Big Dig,” a massive highway and tunnel construction megaproject.
-
A.
TCAT
TCAT is the public bus transit system serving Ithaca and the surrounding Tompkins County area in New York State.
-
B.
TCA
TCA is the commonly used abbreviation for the Technical Cooperation Administration, a former U.S. government agency responsible for administering foreign aid and technical assistance programs.
-
C.
TCA
TCA is the three-letter ISO 3166-1 alpha-3 country code for the Turks and Caicos Islands.
-
D.
CAC
The Central American Cup (CAC) is a regional football tournament featuring national teams from Central America competing for the championship title.
-
E.
CAC
CAC is the Computing Accreditation Commission, a specialized body that accredits computing-related degree programs to ensure they meet established quality and professional standards.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
highway megaproject
ⓘ
infrastructure project ⓘ transportation project ⓘ tunnel construction project ⓘ |
| abbreviationFor |
Central Artery/Tunnel
ⓘ
linked to:
Central Artery/Tunnel Project
|
| alsoKnownAs |
Big Dig
ⓘ
Boston’s Central Artery/Tunnel Project ⓘ
linked to:
Central Artery/Tunnel Project
|
| cityServed | Boston ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| engineeringFeature |
complex traffic management during construction
ⓘ
construction under an active city ⓘ extensive use of slurry walls ⓘ |
| estimatedCostAtApproval | approximately $2.6 billion ⓘ |
| finalCostEstimate | over $14 billion ⓘ |
| fullName | Central Artery/Tunnel Project ⓘ |
| fundingSource |
Commonwealth of Massachusetts
ⓘ
linked to:
Massachusetts
federal government of the United States ⓘ
linked to:
United States government
|
| impact |
created new surface streets and parks
ⓘ
reconnected Boston’s North End and waterfront to downtown ⓘ removed elevated highway from Boston’s downtown waterfront ⓘ |
| includes |
Central Artery tunnel
ⓘ
linked to:
Central Artery corridor
I-90 extension to Logan Airport ⓘ
linked to:
Interstate 90 (Massachusetts)
I-93 underground alignment through downtown Boston ⓘ Ted Williams Tunnel ⓘ
linked to:
Ted Williams Tunnel (Boston)
Zakim Bunker Hill Bridge ⓘ
linked to:
Zakim Bridge
|
| jurisdiction |
Commonwealth of Massachusetts
ⓘ
linked to:
Massachusetts
|
| location |
Boston
ⓘ
Massachusetts ⓘ |
| majorConstructionPeriod |
1990s
ⓘ
2000s ⓘ |
| managingAgency |
Massachusetts Highway Department
ⓘ
linked to:
Massachusetts Department of Transportation
Massachusetts Turnpike Authority ⓘ |
| notableFor |
being one of the most expensive highway projects in U.S. history
ⓘ
construction delays ⓘ cost overruns ⓘ engineering complexity ⓘ |
| primaryPurpose |
improve traffic flow through downtown Boston
ⓘ
rebuild Boston’s Central Artery highway system ⓘ reduce congestion on Interstate 93 ⓘ replace elevated Central Artery with tunnels ⓘ |
| roadType | interstate highway ⓘ |
| servesHighway |
Interstate 90
ⓘ
Interstate 93 ⓘ |
| startDate | 1991 ⓘ |
| subjectOf |
government audits and investigations
ⓘ
public controversy ⓘ |
| substantialCompletionDate | 2007 ⓘ |
| transportationMode | automobile traffic ⓘ |
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: CA/T Description of subject: CA/T is the commonly used abbreviation for Boston’s Central Artery/Tunnel Project, better known as the “Big Dig,” a massive highway and tunnel construction megaproject.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: CA/T