U3 line
E300311
The U3 line is a route of the Frankfurt U-Bahn rapid transit system that connects central Frankfurt with its northwestern suburbs.
All labels observed (1)
| Label | Occurrences |
|---|---|
| U3 line canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T2781282 — 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: U3 line Context triple: [Frankfurt Hauptwache station, servedBy, U3 line]
-
A.
U1 line
The U1 line is a route of the Frankfurt U-Bahn rapid transit system that connects central Frankfurt with several northern suburbs.
-
B.
U1 metro line
The U1 metro line is one of Vienna’s main underground lines, running north–south through the city and connecting key districts and transport hubs.
-
C.
U2 metro line
The U2 metro line is one of Vienna’s rapid transit lines, running from the city’s outskirts through central districts and serving major venues and recreational areas.
-
D.
T Line
The T Line is a streetcar-style light rail route within the Sound Transit Link system serving Tacoma, Washington.
-
E.
Metro Line 3
Metro Line 3 is a major Mexico City Metro route that runs north–south across the city, connecting key residential and commercial areas including the Gustavo A. Madero borough.
- 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: U3 line Target entity description: The U3 line is a route of the Frankfurt U-Bahn rapid transit system that connects central Frankfurt with its northwestern suburbs.
-
A.
U1 line
The U1 line is a route of the Frankfurt U-Bahn rapid transit system that connects central Frankfurt with several northern suburbs.
-
B.
U1 metro line
The U1 metro line is one of Vienna’s main underground lines, running north–south through the city and connecting key districts and transport hubs.
-
C.
U2 metro line
The U2 metro line is one of Vienna’s rapid transit lines, running from the city’s outskirts through central districts and serving major venues and recreational areas.
-
D.
T Line
The T Line is a streetcar-style light rail route within the Sound Transit Link system serving Tacoma, Washington.
-
E.
Metro Line 3
Metro Line 3 is a major Mexico City Metro route that runs north–south across the city, connecting key residential and commercial areas including the Gustavo A. Madero borough.
- F. None of above. chosen
Statements (16)
| Predicate | Object |
|---|---|
| instanceOf |
Frankfurt U-Bahn line
ⓘ
rapid transit line ⓘ |
| connects |
central Frankfurt
ⓘ
linked to:
Innenstadt (Frankfurt am Main)
northwestern suburbs of Frankfurt ⓘ |
| fareSystem | Rhein-Main-Verkehrsverbund ⓘ |
| hasRollingStockType | electric multiple unit ⓘ |
| hasServiceType |
suburban rail
ⓘ
urban rail ⓘ |
| hasTrackGauge | standard gauge ⓘ |
| locatedIn |
Frankfurt am Main
ⓘ
Germany ⓘ Hesse ⓘ |
| operatedBy | Verkehrsgesellschaft Frankfurt am Main ⓘ |
| partOf | Frankfurt U-Bahn ⓘ |
| systemType | rapid transit ⓘ |
| usesElectrificationSystem | overhead line ⓘ |
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: U3 line Description of subject: The U3 line is a route of the Frankfurt U-Bahn rapid transit system that connects central Frankfurt with its northwestern suburbs.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.