Tianjin Metro Line Z21
E689220
Tianjin Metro Line Z21 is a planned rapid transit line intended to expand and improve urban rail connectivity within Tianjin, China.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tianjin Metro Line Z21 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7119481 — 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: Tianjin Metro Line Z21 Context triple: [Tianjin Metro, hasLine, Tianjin Metro Line Z21]
-
A.
Tianjin Metro Line Z20
Tianjin Metro Line Z20 is a planned rapid transit line in Tianjin, China, intended to expand the city’s urban rail network and improve cross-district connectivity.
-
B.
Tianjin Metro Line Z19
Tianjin Metro Line Z19 is a planned rapid transit line in Tianjin, China, intended to expand the city’s urban rail network and improve regional connectivity.
-
C.
Tianjin Metro Line Z1
Tianjin Metro Line Z1 is a planned rapid transit line intended to expand and improve urban rail connectivity within the city of Tianjin, China.
-
D.
Tianjin Metro Line Z12
Tianjin Metro Line Z12 is a planned rapid transit line intended to expand and improve urban rail connectivity within Tianjin, China.
-
E.
Tianjin Metro Line Z11
Tianjin Metro Line Z11 is a planned rapid transit line in Tianjin, China, intended to expand the city’s urban rail network and improve regional connectivity.
- 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: Tianjin Metro Line Z21 Target entity description: Tianjin Metro Line Z21 is a planned rapid transit line intended to expand and improve urban rail connectivity within Tianjin, China.
-
A.
Tianjin Metro Line Z20
Tianjin Metro Line Z20 is a planned rapid transit line in Tianjin, China, intended to expand the city’s urban rail network and improve cross-district connectivity.
-
B.
Tianjin Metro Line Z19
Tianjin Metro Line Z19 is a planned rapid transit line in Tianjin, China, intended to expand the city’s urban rail network and improve regional connectivity.
-
C.
Tianjin Metro Line Z1
Tianjin Metro Line Z1 is a planned rapid transit line intended to expand and improve urban rail connectivity within the city of Tianjin, China.
-
D.
Tianjin Metro Line Z12
Tianjin Metro Line Z12 is a planned rapid transit line intended to expand and improve urban rail connectivity within Tianjin, China.
-
E.
Tianjin Metro Line Z11
Tianjin Metro Line Z11 is a planned rapid transit line in Tianjin, China, intended to expand the city’s urban rail network and improve regional connectivity.
- F. None of above. chosen
Statements (19)
| Predicate | Object |
|---|---|
| instanceOf |
planned metro line
ⓘ
urban rail transit line ⓘ |
| cityServed | Tianjin ⓘ |
| country | China ⓘ |
| infrastructureType | rail-based transit ⓘ |
| lineDesignation | Z21 ⓘ |
| locatedIn |
China
ⓘ
Tianjin ⓘ |
| networkRole | metro line in Tianjin Metro network ⓘ |
| operator |
Tianjin Metro (planned)
ⓘ
linked to:
Tianjin Metro
|
| partOf | Tianjin Metro ⓘ |
| plannedFor | public transportation ⓘ |
| purpose |
expand urban rail connectivity in Tianjin
ⓘ
improve urban rail connectivity in Tianjin ⓘ |
| region |
Tianjin Municipality
ⓘ
linked to:
Tianjin
|
| serves | urban areas of Tianjin ⓘ |
| status | planned ⓘ |
| systemType | urban rail transit ⓘ |
| transportationType | 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: Tianjin Metro Line Z21 Description of subject: Tianjin Metro Line Z21 is a planned rapid transit line intended to expand and improve urban rail connectivity within Tianjin, China.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.