Río Piedras station
E261015
Río Piedras station is a rapid transit stop on San Juan’s Tren Urbano system serving the Río Piedras district and nearby University of Puerto Rico campus.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Río Piedras station canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T2287738 — 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: Río Piedras station Context triple: [Tren Urbano, hasStation, Río Piedras station]
-
A.
Hato Rey station
Hato Rey station is a rapid transit stop on San Juan, Puerto Rico’s Tren Urbano system serving the Hato Rey financial and commercial district.
-
B.
Bayamón station
Bayamón station is a major rapid transit station in Bayamón, Puerto Rico, serving as the western endpoint of the San Juan metropolitan area's Tren Urbano system.
-
C.
Port Washington station
Port Washington station is a Long Island Rail Road commuter rail station in Port Washington, New York, serving as the eastern endpoint of the Port Washington Branch.
-
D.
Port of Mayagüez
The Port of Mayagüez is a major seaport on Puerto Rico’s western coast that handles regional cargo and passenger ferry services, particularly to the Dominican Republic.
-
E.
Bayside station
Bayside station is a Long Island Rail Road commuter rail stop in the Bayside neighborhood of Queens, New York City.
- 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: Río Piedras station Target entity description: Río Piedras station is a rapid transit stop on San Juan’s Tren Urbano system serving the Río Piedras district and nearby University of Puerto Rico campus.
-
A.
Hato Rey station
Hato Rey station is a rapid transit stop on San Juan, Puerto Rico’s Tren Urbano system serving the Hato Rey financial and commercial district.
-
B.
Bayamón station
Bayamón station is a major rapid transit station in Bayamón, Puerto Rico, serving as the western endpoint of the San Juan metropolitan area's Tren Urbano system.
-
C.
Port Washington station
Port Washington station is a Long Island Rail Road commuter rail station in Port Washington, New York, serving as the eastern endpoint of the Port Washington Branch.
-
D.
Port of Mayagüez
The Port of Mayagüez is a major seaport on Puerto Rico’s western coast that handles regional cargo and passenger ferry services, particularly to the Dominican Republic.
-
E.
Bayside station
Bayside station is a Long Island Rail Road commuter rail stop in the Bayside neighborhood of Queens, New York City.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
Tren Urbano station
ⓘ
railway station ⓘ rapid transit station ⓘ |
| cityServed | San Juan ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | third rail ⓘ |
| fareZone | Tren Urbano standard fare zone ⓘ |
| hasConnection | bus services ⓘ |
| hasEntrance |
entrances on Gándara Street
ⓘ
entrances on Ponce de León Avenue ⓘ |
| hasLanguage |
English
ⓘ
Spanish ⓘ |
| line |
Tren Urbano
ⓘ
surface form:
Tren Urbano main line
|
| locatedIn |
Río Piedras, San Juan, Puerto Rico
ⓘ
San Juan, Puerto Rico ⓘ |
| locatedInTimeZone |
Atlantic Time Zone
ⓘ
surface form:
Atlantic Standard Time
|
| nearby |
Plaza de Río Piedras
ⓘ
University of Puerto Rico main gate ⓘ |
| operator | Alternate Concepts ⓘ |
| owner | Puerto Rico Department of Transportation and Public Works ⓘ |
| partOf | Tren Urbano ⓘ |
| platformType | island platform ⓘ |
| publicTransitSystem | Tren Urbano ⓘ |
| railGauge | standard gauge ⓘ |
| serves |
Río Piedras, San Juan, Puerto Rico
ⓘ
surface form:
Río Piedras district
University of Puerto Rico ⓘ
surface form:
University of Puerto Rico, Río Piedras Campus
|
| servesNeighborhood | Río Piedras urban center ⓘ |
| servesPurpose |
access to University of Puerto Rico campus
ⓘ
access to commercial area of Río Piedras ⓘ |
| structureType | underground station ⓘ |
| system | Tren Urbano ⓘ |
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: Río Piedras station Description of subject: Río Piedras station is a rapid transit stop on San Juan’s Tren Urbano system serving the Río Piedras district and nearby University of Puerto Rico campus.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.