Hanoi Metro Line 2A Cát Linh–Hà Đông
E769113
Hanoi Metro Line 2A Cát Linh–Hà Đông is an elevated urban rail line in Hanoi and Vietnam’s first metro line, connecting central districts with the southwestern Hà Đông area.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Hanoi Metro Line 2A Cát Linh–Hà Đông canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8962196 — 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: Hanoi Metro Line 2A Cát Linh–Hà Đông Context triple: [Hà Đông District, hasPublicTransport, Hanoi Metro Line 2A Cát Linh–Hà Đông]
-
A.
Hanoi–Hoang Mai Railway
The Hanoi–Hoang Mai Railway is a key rail line in Vietnam connecting central Hanoi with the Hoang Mai area as part of the country’s main railway network.
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B.
Hanoi–Haiphong railway
The Hanoi–Haiphong railway is a major rail line in northern Vietnam that connects the capital city of Hanoi with the key port city of Haiphong, serving as an important corridor for both passenger and freight transport.
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C.
Hanoi–Quan Trieu Railway
The Hanoi–Quan Trieu Railway is a key standard-gauge rail line in northern Vietnam that connects the capital city Hanoi with the industrial and mining areas around Quan Trieu in Thai Nguyen Province.
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D.
Hanoi–Dong Dang Railway
The Hanoi–Dong Dang Railway is a major rail line in northern Vietnam that connects the capital city of Hanoi to the border town of Đồng Đăng near China, serving as an important route for both passenger and freight transport.
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E.
Hanoi–Thai Nguyen Railway
The Hanoi–Thai Nguyen Railway is a key rail line in northern Vietnam that connects the capital city of Hanoi with the industrial and educational hub of Thai Nguyen, supporting both passenger and freight transport.
- 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: Hanoi Metro Line 2A Cát Linh–Hà Đông Target entity description: Hanoi Metro Line 2A Cát Linh–Hà Đông is an elevated urban rail line in Hanoi and Vietnam’s first metro line, connecting central districts with the southwestern Hà Đông area.
-
A.
Hanoi–Hoang Mai Railway
The Hanoi–Hoang Mai Railway is a key rail line in Vietnam connecting central Hanoi with the Hoang Mai area as part of the country’s main railway network.
-
B.
Hanoi–Haiphong railway
The Hanoi–Haiphong railway is a major rail line in northern Vietnam that connects the capital city of Hanoi with the key port city of Haiphong, serving as an important corridor for both passenger and freight transport.
-
C.
Hanoi–Quan Trieu Railway
The Hanoi–Quan Trieu Railway is a key standard-gauge rail line in northern Vietnam that connects the capital city Hanoi with the industrial and mining areas around Quan Trieu in Thai Nguyen Province.
-
D.
Hanoi–Dong Dang Railway
The Hanoi–Dong Dang Railway is a major rail line in northern Vietnam that connects the capital city of Hanoi to the border town of Đồng Đăng near China, serving as an important route for both passenger and freight transport.
-
E.
Hanoi–Thai Nguyen Railway
The Hanoi–Thai Nguyen Railway is a key rail line in northern Vietnam that connects the capital city of Hanoi with the industrial and educational hub of Thai Nguyen, supporting both passenger and freight transport.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
elevated railway
ⓘ
metro line ⓘ |
| connects |
Hà Đông district
NERFINISHED
ⓘ
central Hanoi ⓘ |
| constructionStart | 2011 ⓘ |
| country |
Viet Nam
ⓘ
surface form:
Vietnam
|
| depot | Phú Lương depot NERFINISHED ⓘ |
| electrification | overhead line ⓘ |
| fareSystem | distance-based fares ⓘ |
| fundingSource | Chinese ODA loan ⓘ |
| gauge | 1435 mm ⓘ |
| hasOfficialName | Tuyến đường sắt đô thị Cát Linh–Hà Đông NERFINISHED ⓘ |
| hasSignalling | CBTC NERFINISHED ⓘ |
| hasStation |
Cát Linh station
NERFINISHED
ⓘ
La Thành station NERFINISHED ⓘ Láng station NERFINISHED ⓘ Phùng Khoang station NERFINISHED ⓘ Thành Công station NERFINISHED ⓘ Thái Hà station NERFINISHED ⓘ Trung Văn station NERFINISHED ⓘ Văn Quán station NERFINISHED ⓘ Yên Nghĩa station NERFINISHED ⓘ |
| languageOfName | Vietnamese ⓘ |
| lineColor | green ⓘ |
| lineNumber | 2A ⓘ |
| locatedIn | Hanoi ⓘ |
| notableFeature | first metro line in Vietnam ⓘ |
| numberOfStations | 12 ⓘ |
| numberOfTracks | 2 ⓘ |
| openingDate | 2021-11-06 ⓘ |
| operator | Hanoi Metro NERFINISHED ⓘ |
| owner | People's Committee of Hanoi NERFINISHED ⓘ |
| partOf | Hanoi Metro NERFINISHED ⓘ |
| primaryPurpose | urban mass transit ⓘ |
| regionServed | Red River Delta NERFINISHED ⓘ |
| rollingStock | CRRC trainsets NERFINISHED ⓘ |
| safetySystem | automatic train protection ⓘ |
| serves |
Hà Đông district
NERFINISHED
ⓘ
Thanh Xuân district NERFINISHED ⓘ Đống Đa district NERFINISHED ⓘ |
| structure | elevated ⓘ |
| system | Hanoi urban railway network NERFINISHED ⓘ |
| terminus |
Cát Linh station
NERFINISHED
ⓘ
Yên Nghĩa station NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
| transportMode | rapid transit ⓘ |
| typeOfTraffic | passenger ⓘ |
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: Hanoi Metro Line 2A Cát Linh–Hà Đông Description of subject: Hanoi Metro Line 2A Cát Linh–Hà Đông is an elevated urban rail line in Hanoi and Vietnam’s first metro line, connecting central districts with the southwestern Hà Đông area.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.