Tehran Metro Line 8
E189010
Tehran Metro Line 8 is a planned or operational rapid transit line within the Tehran Metro system, serving as part of the urban rail network in Iran’s capital.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Tehran Metro Line 8 canonical | 2 |
| Tehran Metro Line 8 (airport rail link) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1658610 — 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: Tehran Metro Line 8 Context triple: [Tehran Metro, hasLine, Tehran Metro Line 8]
-
A.
Tehran Metro
Tehran Metro is the rapid transit system serving Iran’s capital, providing extensive urban and suburban rail transport across the Tehran metropolitan area.
-
B.
Tehran Bus Rapid Transit
Tehran Bus Rapid Transit is a dedicated-lane bus network in Iran’s capital that provides high-capacity, rapid public transportation across major urban corridors.
-
C.
Imam Khomeini Metro Station
Imam Khomeini Metro Station is a major central interchange hub in the Tehran Metro network, connecting multiple lines and serving as a key transit point in Iran’s capital.
-
D.
Ankara Metro
Ankara Metro is the rapid transit system serving Turkey's capital city, providing urban rail transportation across Ankara and its surrounding districts.
-
E.
Tehran–Karaj corridor
The Tehran–Karaj corridor is a major urban and transportation axis linking Iran’s capital Tehran with the nearby city of Karaj, forming one of the country’s most densely populated and heavily traveled metropolitan regions.
- 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: Tehran Metro Line 8 Target entity description: Tehran Metro Line 8 is a planned or operational rapid transit line within the Tehran Metro system, serving as part of the urban rail network in Iran’s capital.
-
A.
Tehran Metro
Tehran Metro is the rapid transit system serving Iran’s capital, providing extensive urban and suburban rail transport across the Tehran metropolitan area.
-
B.
Tehran Bus Rapid Transit
Tehran Bus Rapid Transit is a dedicated-lane bus network in Iran’s capital that provides high-capacity, rapid public transportation across major urban corridors.
-
C.
Imam Khomeini Metro Station
Imam Khomeini Metro Station is a major central interchange hub in the Tehran Metro network, connecting multiple lines and serving as a key transit point in Iran’s capital.
-
D.
Ankara Metro
Ankara Metro is the rapid transit system serving Turkey's capital city, providing urban rail transportation across Ankara and its surrounding districts.
-
E.
Tehran–Karaj corridor
The Tehran–Karaj corridor is a major urban and transportation axis linking Iran’s capital Tehran with the nearby city of Karaj, forming one of the country’s most densely populated and heavily traveled metropolitan regions.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
metro line
ⓘ
rapid transit line ⓘ |
| cityServed | Tehran ⓘ |
| continent | Asia ⓘ |
| country | Iran ⓘ |
| electrification | electric railway ⓘ |
| gauge | standard gauge ⓘ |
| hasMode | rail transport ⓘ |
| isInPlanningOrOperation | true ⓘ |
| locatedIn |
Iran
ⓘ
Tehran ⓘ Tehran Province ⓘ |
| locatedInTimeZone | Iran Standard Time ⓘ |
| network |
Tehran urban rail network
ⓘ
linked to:
Tehran Metro
|
| operator | Tehran Urban and Suburban Railways Organization ⓘ |
| owner | Tehran Urban and Suburban Railways Organization ⓘ |
| partOf |
Tehran Metro
ⓘ
public transport network of Tehran ⓘ |
| plannedUse | passenger transport ⓘ |
| railwaySignalling | metro signalling system ⓘ |
| regionServed |
Greater Tehran area
ⓘ
linked to:
Greater Tehran
|
| servesAs | urban rail corridor in Tehran ⓘ |
| systemType | metro ⓘ |
| transportSystem | Tehran Metro ⓘ |
| transportType | rapid transit ⓘ |
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: Tehran Metro Line 8 Description of subject: Tehran Metro Line 8 is a planned or operational rapid transit line within the Tehran Metro system, serving as part of the urban rail network in Iran’s capital.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Tehran Metro Line 8