BAL
E41917
BAL is the Amtrak station code for Pennsylvania Station in Baltimore, Maryland, a major rail hub in the city’s transportation network.
All labels observed (1)
| Label | Occurrences |
|---|---|
| BAL canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T328317 — 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: BAL Context triple: [Pennsylvania Station (Baltimore), stationCode, BAL]
-
A.
BEL
BEL is the three-letter ISO 3166-1 alpha-3 country code that uniquely identifies Belgium in international standards and data systems.
-
B.
BA
BA is the New York Stock Exchange ticker symbol for The Boeing Company, a major American aerospace and defense manufacturer.
-
C.
BOL
BOL is the three-letter ISO 3166-1 alpha-3 country code assigned to Bolivia.
-
D.
BO
BO is the two-letter ISO 3166-1 alpha-2 country code that uniquely identifies Bolivia in international standards and systems.
-
E.
AL
AL is the common abbreviation for the American League, one of the two major professional baseball leagues that make up Major League Baseball in the United States and Canada.
- 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: BAL Target entity description: BAL is the Amtrak station code for Pennsylvania Station in Baltimore, Maryland, a major rail hub in the city’s transportation network.
-
A.
BEL
BEL is the three-letter ISO 3166-1 alpha-3 country code that uniquely identifies Belgium in international standards and data systems.
-
B.
BA
BA is the New York Stock Exchange ticker symbol for The Boeing Company, a major American aerospace and defense manufacturer.
-
C.
BOL
BOL is the three-letter ISO 3166-1 alpha-3 country code assigned to Bolivia.
-
D.
BO
BO is the two-letter ISO 3166-1 alpha-2 country code that uniquely identifies Bolivia in international standards and systems.
-
E.
AL
AL is the common abbreviation for the American League, one of the two major professional baseball leagues that make up Major League Baseball in the United States and Canada.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
Amtrak station code
ⓘ
railway station code ⓘ |
| administeredBy | Amtrak ⓘ |
| appliesTo | all Amtrak services stopping at Baltimore Penn Station ⓘ |
| associatedWithRailHub |
Baltimore Penn Station
ⓘ
linked to:
Pennsylvania Station (Baltimore)
|
| codeType | three-letter station code ⓘ |
| distinguishesFrom | other Amtrak stations in Maryland ⓘ |
| hasIATAStyleFormat | three-letter code similar to airport codes ⓘ |
| identifiesPhysicalStation |
Pennsylvania Station at 1500 North Charles Street, Baltimore
ⓘ
linked to:
Pennsylvania Station (Baltimore)
|
| isMajorStopOn | Amtrak Northeast Corridor services ⓘ |
| locatedInCity | Baltimore ⓘ |
| locatedInCountry |
United States
ⓘ
linked to:
United States of America
|
| locatedInState | Maryland ⓘ |
| onRailLine |
Amtrak Northeast Corridor
ⓘ
linked to:
Northeast Corridor
MARC Penn Line ⓘ |
| partOfTransportationNetwork |
Baltimore transportation network
ⓘ
Northeast Corridor ⓘ |
| refersTo | Pennsylvania Station (Baltimore) ⓘ |
| servesCity | Baltimore ⓘ |
| servesRegion |
Baltimore metropolitan area
ⓘ
linked to:
Baltimore–Washington metropolitan area
|
| stationCodeFor | Pennsylvania Station (Baltimore) ⓘ |
| usedByOperator | Amtrak ⓘ |
| usedForServiceType |
commuter rail
ⓘ
intercity rail ⓘ regional rail ⓘ |
| usedInPassengerInformation | Amtrak passenger information systems ⓘ |
| usedInReservationSystems | Amtrak reservation system ⓘ |
| usedInTicketing | Amtrak ticketing system ⓘ |
| usedInTimetables | Amtrak timetables ⓘ |
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: BAL Description of subject: BAL is the Amtrak station code for Pennsylvania Station in Baltimore, Maryland, a major rail hub in the city’s transportation network.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.