Triple
T8173722
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Line 21 (Guangzhou Metro) |
E190887
|
entity |
| Predicate | uses |
P98
|
FINISHED |
| Object |
China Railway Type A metro trains
China Railway Type A metro trains are high-capacity urban rapid transit vehicles widely used in Chinese metro systems, designed for heavy passenger volumes and efficient operation on busy lines.
|
E674998
|
NE FINISHED |
How this triple was built (4 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: China Railway Type A metro trains | Statement: [Line 21 (Guangzhou Metro), uses, China Railway Type A metro trains]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: China Railway Type A metro trains Context triple: [Line 21 (Guangzhou Metro), uses, China Railway Type A metro trains]
-
A.
Shanghai Metro Type A trains
Shanghai Metro Type A trains are high-capacity electric multiple units used across the Shanghai Metro system, designed for heavy-traffic urban rapid transit lines such as Line 11.
-
B.
Guangzhou Metro Type B trains
Guangzhou Metro Type B trains are standard-gauge electric multiple units used across several lines of the Guangzhou Metro system to provide high-capacity urban rail transit.
-
C.
Fuxing series EMU
The Fuxing series EMU is a family of Chinese high-speed electric multiple unit trains known for operating at some of the world’s highest commercial speeds on major routes across China’s high-speed rail network.
-
D.
Siemens modular metro trains
Siemens modular metro trains are a family of customizable, electric multiple-unit metro vehicles designed by Siemens for urban rapid transit systems.
-
E.
M300 series trains
The M300 series trains are a modern fleet of metro trains operating on the Helsinki Metro, designed to provide efficient, high-capacity urban rail transport.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: China Railway Type A metro trains Triple: [Line 21 (Guangzhou Metro), uses, China Railway Type A metro trains]
Generated description
China Railway Type A metro trains are high-capacity urban rapid transit vehicles widely used in Chinese metro systems, designed for heavy passenger volumes and efficient operation on busy lines.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: China Railway Type A metro trains Target entity description: China Railway Type A metro trains are high-capacity urban rapid transit vehicles widely used in Chinese metro systems, designed for heavy passenger volumes and efficient operation on busy lines.
-
A.
Shanghai Metro Type A trains
chosen
Shanghai Metro Type A trains are high-capacity electric multiple units used across the Shanghai Metro system, designed for heavy-traffic urban rapid transit lines such as Line 11.
-
B.
Guangzhou Metro Type B trains
Guangzhou Metro Type B trains are standard-gauge electric multiple units used across several lines of the Guangzhou Metro system to provide high-capacity urban rail transit.
-
C.
Fuxing series EMU
The Fuxing series EMU is a family of Chinese high-speed electric multiple unit trains known for operating at some of the world’s highest commercial speeds on major routes across China’s high-speed rail network.
-
D.
Siemens modular metro trains
Siemens modular metro trains are a family of customizable, electric multiple-unit metro vehicles designed by Siemens for urban rapid transit systems.
-
E.
M300 series trains
The M300 series trains are a modern fleet of metro trains operating on the Helsinki Metro, designed to provide efficient, high-capacity urban rail transport.
- F. None of above.
Provenance (5 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_69ca82c1c0a08190bf8692b4d91a03ca |
completed | March 30, 2026, 2:03 p.m. |
| NER | Named-entity recognition | batch_69cb48092b348190a37cb3746a434094 |
completed | March 31, 2026, 4:05 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ccbf65ed508190abb60f9189f43e5c |
completed | April 1, 2026, 6:47 a.m. |
| NEDg | Description generation | batch_69ccc313ba7c81909b9ee65b37ed165e |
completed | April 1, 2026, 7:02 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69ccd84893488190ae5376524650d5c4 |
completed | April 1, 2026, 8:33 a.m. |
Created at: March 30, 2026, 5:40 p.m.