UP
E10261
UP is the standard reporting mark used to identify rail equipment owned or operated by the Union Pacific Railroad in North America.
All labels observed (1)
| Label | Occurrences |
|---|---|
| UP canonical | 6 |
How this entity was disambiguated
This entity first appeared as the object of triple T106488 — 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: UP Context triple: [Union Pacific Railroad, reportingMarks, UP]
-
A.
LU
LU is the two-letter ISO 3166-1 alpha-2 country code assigned to Luxembourg for international identification and data standards.
-
B.
HUP
HUP is a major academic medical center in Philadelphia that serves as the flagship teaching hospital of the University of Pennsylvania's health system.
-
C.
NE
NE is the common abbreviation for the New England Revolution, a professional Major League Soccer club based in the Greater Boston area.
-
D.
SU
SU was the two-letter country code used to represent the former Soviet Union in various international standards and systems.
-
E.
GU
GU is the two-letter ISO 3166 country code assigned to Guam, an unincorporated territory of the United States in the western Pacific Ocean.
- 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: UP Target entity description: UP is the standard reporting mark used to identify rail equipment owned or operated by the Union Pacific Railroad in North America.
-
A.
LU
LU is the two-letter ISO 3166-1 alpha-2 country code assigned to Luxembourg for international identification and data standards.
-
B.
HUP
HUP is a major academic medical center in Philadelphia that serves as the flagship teaching hospital of the University of Pennsylvania's health system.
-
C.
NE
NE is the common abbreviation for the New England Revolution, a professional Major League Soccer club based in the Greater Boston area.
-
D.
SU
SU was the two-letter country code used to represent the former Soviet Union in various international standards and systems.
-
E.
GU
GU is the two-letter ISO 3166 country code assigned to Guam, an unincorporated territory of the United States in the western Pacific Ocean.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
railroad reporting mark
ⓘ
standard carrier alpha code ⓘ |
| assignedBy | Association of American Railroads ⓘ |
| associatedWith |
Union Pacific Corporation
ⓘ
linked to:
Union Pacific Railroad
|
| fullForm | Union Pacific Railroad ⓘ |
| hasInitialLetter | U ⓘ |
| hasSecondLetter | P ⓘ |
| identifiesOperator | Union Pacific Railroad ⓘ |
| identifiesOwner | Union Pacific Railroad ⓘ |
| industry | rail transportation ⓘ |
| markType | alphabetic reporting mark ⓘ |
| operatedBy | Union Pacific Railroad ⓘ |
| operatesOn | standard gauge track ⓘ |
| railroadType | Class I railroad ⓘ |
| relatedStandard | AAR reporting marks system ⓘ |
| usedBy | Union Pacific Railroad ⓘ |
| usedFor |
equipment tracking
ⓘ
freight billing ⓘ railcar identification ⓘ |
| usedInContext |
freight rail operations
ⓘ
rail logistics ⓘ railcar leasing and management ⓘ |
| usedInCountry |
United States
ⓘ
linked to:
United States of America
|
| usedInRegion | North America ⓘ |
| usedOn |
freight cars
ⓘ
intermodal equipment ⓘ locomotives ⓘ railroad maintenance-of-way equipment ⓘ |
| usedOnNetwork |
Union Pacific Railroad network
ⓘ
linked to:
Union Pacific Railroad
|
| usedSinceCentury | 20th century ⓘ |
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: UP Description of subject: UP is the standard reporting mark used to identify rail equipment owned or operated by the Union Pacific Railroad in North America.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.