Triple

T22441780

Position	Surface form	Disambiguated ID	Type / Status
Subject	Chengdu Metro Line 1	`E554769`	entity
Predicate	owner	`P347`	FINISHED
Object	Chengdu Metro Limited	`—`	NE NERFINISHED

How this triple was built (3 steps)

Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.

NER Named-entity recognition gpt-5-mini

Instruction

Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).

Input

Phrase: Chengdu Metro Limited | Statement: [Chengdu Metro Line 1, owner, Chengdu Metro Limited]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Chengdu Metro Limited
Context triple: [Chengdu Metro Line 1, owner, Chengdu Metro Limited]

A. Chongqing Rail Transit Group
Chongqing Rail Transit Group is the state-owned company responsible for building, operating, and managing the urban rail transit network in Chongqing, China.
B. Kunming Rail Transit Group
Kunming Rail Transit Group is the state-owned company responsible for constructing, operating, and managing the urban rail transit system in Kunming, China.
C. Guangzhou Metro Group
Guangzhou Metro Group is the state-owned company responsible for constructing, operating, and managing the urban rail transit network in Guangzhou, China.
D. Beijing MTR Corporation Limited
Beijing MTR Corporation Limited is a joint-venture rail transit company responsible for operating and managing several lines of the Beijing Subway system.
E. Shanghai Shentong Metro Group
Shanghai Shentong Metro Group is the state-owned company responsible for operating and managing Shanghai’s urban rapid transit network.
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: Chengdu Metro Limited
Target entity description: Chengdu Metro Limited is the state-owned company responsible for constructing, operating, and managing the urban rail transit system in Chengdu, China.

A. Chongqing Rail Transit Group
Chongqing Rail Transit Group is the state-owned company responsible for building, operating, and managing the urban rail transit network in Chongqing, China.
B. Kunming Rail Transit Group
Kunming Rail Transit Group is the state-owned company responsible for constructing, operating, and managing the urban rail transit system in Kunming, China.
C. Guangzhou Metro Group
Guangzhou Metro Group is the state-owned company responsible for constructing, operating, and managing the urban rail transit network in Guangzhou, China.
D. Beijing MTR Corporation Limited
Beijing MTR Corporation Limited is a joint-venture rail transit company responsible for operating and managing several lines of the Beijing Subway system.
E. Shanghai Shentong Metro Group
Shanghai Shentong Metro Group is the state-owned company responsible for operating and managing Shanghai’s urban rapid transit network.
F. None of above. chosen

Provenance (2 batches)

The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.

Step	Stage	Batch ID	Status	When
creating	Elicitation	`batch_69e11e5010e48190ae1e9c9db9697637`	completed	April 16, 2026, 5:37 p.m.
NER	Named-entity recognition	`batch_69f15ae2f7608190b1c1e8bd12ca2162`	completed	April 29, 2026, 1:12 a.m.

Created at: April 16, 2026, 8:47 p.m.