UPY
E11065
UPY is a reporting mark used by Union Pacific Railroad, primarily identifying its yard and switching locomotives.
All labels observed (1)
| Label | Occurrences |
|---|---|
| UPY canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T106489 — 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: UPY Context triple: [Union Pacific Railroad, reportingMarks, UPY]
-
A.
UP
UP is the standard reporting mark used to identify rail equipment owned or operated by the Union Pacific Railroad in North America.
-
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.
LU
LU is the two-letter ISO 3166-1 alpha-2 country code assigned to Luxembourg for international identification and data standards.
-
D.
LBY
LBY is the three-letter ISO 3166-1 alpha-3 country code assigned to Libya.
-
E.
U4 Network
U4 Network is an international alliance of research-intensive universities that collaborate closely on education, research, and academic exchange.
- 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: UPY Target entity description: UPY is a reporting mark used by Union Pacific Railroad, primarily identifying its yard and switching locomotives.
-
A.
UP
UP is the standard reporting mark used to identify rail equipment owned or operated by the Union Pacific Railroad in North America.
-
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.
LU
LU is the two-letter ISO 3166-1 alpha-2 country code assigned to Luxembourg for international identification and data standards.
-
D.
LBY
LBY is the three-letter ISO 3166-1 alpha-3 country code assigned to Libya.
-
E.
U4 Network
U4 Network is an international alliance of research-intensive universities that collaborate closely on education, research, and academic exchange.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
railroad rolling stock identifier
ⓘ
reporting mark ⓘ |
| appliesTo |
diesel-electric locomotives
ⓘ
road switchers used in yard service ⓘ yard switchers ⓘ |
| associatedWith | UP (Union Pacific) reporting mark ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| distinguishesFrom | UP road locomotives ⓘ |
| equipmentType | locomotive ⓘ |
| fullName | Union Pacific Yard ⓘ |
| identifies |
switching locomotives
ⓘ
yard locomotives ⓘ |
| markingSystem | North American railroad reporting mark system ⓘ |
| operator | Union Pacific Corporation subsidiary Union Pacific Railroad ⓘ |
| owner | Union Pacific Railroad ⓘ |
| primaryFunctionContext | classification of motive power by service type ⓘ |
| railroadClass | Class I railroad (Union Pacific Railroad) ⓘ |
| railroadCodeType | locomotive reporting mark ⓘ |
| railroadNetwork |
Union Pacific Railroad network
ⓘ
linked to:
Union Pacific Railroad
|
| regionServed |
Midwestern United States
ⓘ
Western United States ⓘ
linked to:
western United States
|
| regulatoryContext | Association of American Railroads reporting mark registry ⓘ |
| scopeOfUse | yard and switching service ⓘ |
| status | active reporting mark ⓘ |
| usedBy | Union Pacific Railroad ⓘ |
| usedFor |
equipment tracking
ⓘ
locomotive identification ⓘ |
| usedOn |
locomotive cab sides
ⓘ
locomotive number boards ⓘ locomotive ownership stencils ⓘ |
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: UPY Description of subject: UPY is a reporting mark used by Union Pacific Railroad, primarily identifying its yard and switching locomotives.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.