Tehran–Mashhad railway
E730335
The Tehran–Mashhad railway is a major Iranian rail line connecting the capital Tehran with the holy city of Mashhad, serving as one of the country’s busiest passenger and freight corridors.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Tehran–Mashhad railway canonical | 2 |
| Tehran–Mashhad railway line | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8343917 — 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–Mashhad railway Context triple: [Semnan Province, traversedBy, Tehran–Mashhad railway]
-
A.
Tehran–Tabriz railway
The Tehran–Tabriz railway is a major rail line in Iran that links the capital Tehran with the northwestern city of Tabriz, serving as a key corridor for passenger and freight transport across the country.
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B.
Tehran–Karaj suburban rail line
The Tehran–Karaj suburban rail line is a key commuter railway service connecting Iran’s capital Tehran with the nearby city of Karaj, helping to handle heavy daily passenger traffic across the metropolitan corridor.
-
C.
Trans-Iranian Railway
The Trans-Iranian Railway is a historic north–south rail line completed in the 1930s that links the Persian Gulf to the Caspian Sea, playing a crucial role in Iran’s transportation network and in Allied logistics during World War II.
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D.
Tehran–IKIA railway connection
The Tehran–IKIA railway connection is a rail link that connects central Tehran with Imam Khomeini International Airport, providing a direct public transit option for air travelers.
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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–Mashhad railway Target entity description: The Tehran–Mashhad railway is a major Iranian rail line connecting the capital Tehran with the holy city of Mashhad, serving as one of the country’s busiest passenger and freight corridors.
-
A.
Tehran–Tabriz railway
The Tehran–Tabriz railway is a major rail line in Iran that links the capital Tehran with the northwestern city of Tabriz, serving as a key corridor for passenger and freight transport across the country.
-
B.
Tehran–Karaj suburban rail line
The Tehran–Karaj suburban rail line is a key commuter railway service connecting Iran’s capital Tehran with the nearby city of Karaj, helping to handle heavy daily passenger traffic across the metropolitan corridor.
-
C.
Trans-Iranian Railway
The Trans-Iranian Railway is a historic north–south rail line completed in the 1930s that links the Persian Gulf to the Caspian Sea, playing a crucial role in Iran’s transportation network and in Allied logistics during World War II.
-
D.
Tehran–IKIA railway connection
The Tehran–IKIA railway connection is a rail link that connects central Tehran with Imam Khomeini International Airport, providing a direct public transit option for air travelers.
-
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 (38)
| Predicate | Object |
|---|---|
| instanceOf |
freight rail corridor
ⓘ
passenger rail corridor ⓘ railway line ⓘ |
| associatedWith | pilgrimage travel to Imam Reza Shrine in Mashhad ⓘ |
| connects | central Iran with northeastern Iran ⓘ |
| connectsCity |
Mashhad
ⓘ
Tehran ⓘ |
| connectsToNetworkAt |
Mashhad railway station
ⓘ
Tehran railway station ⓘ |
| country | Iran ⓘ |
| electrificationStatus | partially electrified ⓘ |
| gauge | standard gauge ⓘ |
| hasFunction |
cargo transport
ⓘ
intercity rail service ⓘ long-distance passenger service ⓘ |
| hasLanguageOfSignage | Persian ⓘ |
| importance | one of the busiest rail corridors in Iran ⓘ |
| infrastructureType | heavy rail ⓘ |
| locatedIn | Iranian plateau ⓘ |
| operator | Islamic Republic of Iran Railways ⓘ |
| owner | Government of Iran ⓘ |
| partOf |
Iranian national railway network
ⓘ
linked to:
Iranian railway network
|
| primaryUse | passenger transport ⓘ |
| role | connects the political capital of Iran with a major religious center ⓘ |
| secondaryUse | freight transport ⓘ |
| servesCity |
Mashhad
ⓘ
Tehran ⓘ |
| servesRegion |
Greater Tehran region
ⓘ
linked to:
Greater Tehran
Razavi Khorasan Province ⓘ northeastern Iran ⓘ |
| status | in operation ⓘ |
| terminus |
Mashhad
ⓘ
Tehran ⓘ |
| trafficLevel |
high passenger volume
ⓘ
significant freight volume ⓘ |
| transportMode | rail ⓘ |
| usedBy |
domestic passengers
ⓘ
international pilgrims ⓘ |
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–Mashhad railway Description of subject: The Tehran–Mashhad railway is a major Iranian rail line connecting the capital Tehran with the holy city of Mashhad, serving as one of the country’s busiest passenger and freight corridors.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Tehran–Mashhad railway