D4
E250702
D4 is a commuter rail line within Moscow’s Moscow Central Diameters network, connecting suburban areas with the city through frequent, urban-style train service.
All labels observed (1)
| Label | Occurrences |
|---|---|
| D4 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2267339 — 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: D4 Context triple: [Moscow Central Diameters, hasLine, D4]
-
A.
The D
"The D" is a popular nickname for Detroit, a major U.S. city known for its automotive industry, musical heritage, and role in American industrial history.
-
B.
D
D is a statically typed, compiled systems programming language designed as a modern successor to C and C++, emphasizing high performance, safety features, and programmer productivity.
-
C.
D
The D is a New York City Subway service that runs on the IND Sixth Avenue Line in Manhattan and connects Rockefeller Center with other major destinations across the city.
-
D.
D
D is the vehicle registration code used on license plates for the German city of Düsseldorf.
-
E.
D-2
D-2 was a 1993 German-led Spacelab space shuttle mission focused on microgravity and life sciences research in low Earth orbit.
- 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: D4 Target entity description: D4 is a commuter rail line within Moscow’s Moscow Central Diameters network, connecting suburban areas with the city through frequent, urban-style train service.
-
A.
The D
"The D" is a popular nickname for Detroit, a major U.S. city known for its automotive industry, musical heritage, and role in American industrial history.
-
B.
D
The D is a New York City Subway service that runs on the IND Sixth Avenue Line in Manhattan and connects Rockefeller Center with other major destinations across the city.
-
C.
D
D is a statically typed, compiled systems programming language designed as a modern successor to C and C++, emphasizing high performance, safety features, and programmer productivity.
-
D.
D
D is the vehicle registration code used on license plates for the German city of Düsseldorf.
-
E.
D-2
D-2 was a 1993 German-led Spacelab space shuttle mission focused on microgravity and life sciences research in low Earth orbit.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail line
ⓘ
railway line ⓘ |
| accessibility | intended for daily commuting ⓘ |
| branding |
MCD D2
ⓘ
surface form:
MCD D4
|
| category |
public transport in Moscow
ⓘ
rail transport in Russia ⓘ |
| connects |
Moscow
ⓘ
surface form:
city of Moscow
suburban areas of Moscow region ⓘ |
| country | Russia ⓘ |
| electrification | overhead line electrification ⓘ |
| fareSystem |
Troika card compatible
ⓘ
integrated with Moscow public transport fares ⓘ |
| gaugeType | broad gauge ⓘ |
| hasFeature |
high frequency stops
ⓘ
integrated timetables with other Moscow transport modes ⓘ multiple transfer stations ⓘ short headways at peak hours ⓘ |
| hasMode | rail ⓘ |
| hasService | passenger rail service ⓘ |
| integrationWith |
Moscow Central Circle
ⓘ
Moscow Metro ⓘ other Moscow Central Diameters lines ⓘ |
| locatedIn |
Moscow
ⓘ
Russia ⓘ |
| networkRole | diameter line ⓘ |
| operator |
Moscow Metro (integration)
ⓘ
Russian Railways ⓘ |
| ownership | state-owned infrastructure ⓘ |
| partOf | Moscow Central Diameters ⓘ |
| primaryFunction | suburban commuter transport ⓘ |
| railwaySystem | Russian railway network ⓘ |
| regionServed |
Moscow Oblast
ⓘ
surface form:
Moscow region
Moscow metropolitan area ⓘ
surface form:
Moscow urban area
|
| rollingStockType | electric multiple units ⓘ |
| safetySystem | modern signalling systems ⓘ |
| secondaryFunction | urban cross-city transit ⓘ |
| servicePattern |
all-day operation
ⓘ
bidirectional service ⓘ frequent service ⓘ |
| serviceType | urban-style train service ⓘ |
| targetUsers |
city residents
ⓘ
commuters ⓘ suburban residents ⓘ |
| ticketing |
contactless payment supported
ⓘ
zonal fare structure (MCD zones) ⓘ |
| trackGauge | 1520 mm ⓘ |
| transportType | commuter rail ⓘ |
| urbanRole | relieves congestion on Moscow Metro ⓘ |
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: D4 Description of subject: D4 is a commuter rail line within Moscow’s Moscow Central Diameters network, connecting suburban areas with the city through frequent, urban-style train service.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
District 4 (Caltrans)