Triple
T14667073
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Chennai MRTS |
E344405
|
entity |
| Predicate | firstSectionOpened |
P20181
|
FINISHED |
| Object |
Chennai Beach–Chepauk
Chennai Beach–Chepauk is the initial stretch of the Chennai Mass Rapid Transit System, linking the coastal Chennai Beach area with the Chepauk locality.
|
E1115496
|
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: Chennai Beach–Chepauk | Statement: [Chennai MRTS, firstSectionOpened, Chennai Beach–Chepauk]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Chennai Beach–Chepauk Context triple: [Chennai MRTS, firstSectionOpened, Chennai Beach–Chepauk]
-
A.
Chennai Beach–Velachery
Chennai Beach–Velachery is a major Mass Rapid Transit System (MRTS) rail corridor in Chennai, India, connecting the coastal Chennai Beach area with the southern suburb of Velachery.
-
B.
Chennai Beach
Chennai Beach is a major suburban railway station in Chennai, India, serving as a key coastal hub that connects the city’s central areas with its Mass Rapid Transit System and other rail networks.
-
C.
Chepauk
Chepauk is a coastal neighborhood in central Chennai, India, known for the historic M. A. Chidambaram cricket stadium and its proximity to Marina Beach.
-
D.
Chennai Beach–Tambaram section
The Chennai Beach–Tambaram section is a key suburban railway corridor in Chennai, India, connecting the city’s coastal terminus with its southern suburbs and serving as one of the busiest commuter routes in the region.
-
E.
Vandalur
Vandalur is a suburban area on the outskirts of Chennai, India, best known for housing the large Arignar Anna Zoological Park.
- 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: Chennai Beach–Chepauk Triple: [Chennai MRTS, firstSectionOpened, Chennai Beach–Chepauk]
Generated description
Chennai Beach–Chepauk is the initial stretch of the Chennai Mass Rapid Transit System, linking the coastal Chennai Beach area with the Chepauk locality.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Chennai Beach–Chepauk Target entity description: Chennai Beach–Chepauk is the initial stretch of the Chennai Mass Rapid Transit System, linking the coastal Chennai Beach area with the Chepauk locality.
-
A.
Chennai Beach–Velachery
Chennai Beach–Velachery is a major Mass Rapid Transit System (MRTS) rail corridor in Chennai, India, connecting the coastal Chennai Beach area with the southern suburb of Velachery.
-
B.
Chennai Beach
Chennai Beach is a major suburban railway station in Chennai, India, serving as a key coastal hub that connects the city’s central areas with its Mass Rapid Transit System and other rail networks.
-
C.
Chepauk
Chepauk is a coastal neighborhood in central Chennai, India, known for the historic M. A. Chidambaram cricket stadium and its proximity to Marina Beach.
-
D.
Chennai Beach–Tambaram section
The Chennai Beach–Tambaram section is a key suburban railway corridor in Chennai, India, connecting the city’s coastal terminus with its southern suburbs and serving as one of the busiest commuter routes in the region.
-
E.
Vandalur
Vandalur is a suburban area on the outskirts of Chennai, India, best known for housing the large Arignar Anna Zoological Park.
- F. None of above. chosen
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_69d822e283fc8190a0e4c235cf880052 |
completed | April 9, 2026, 10:06 p.m. |
| NER | Named-entity recognition | batch_69deb54dda1c8190bf16d17e26a2bba6 |
completed | April 14, 2026, 9:44 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fdf07c7fa88190bb09f2f444d69786 |
completed | May 8, 2026, 2:17 p.m. |
| NEDg | Description generation | batch_69fdf2843a1c8190a14f4ac4d3157e05 |
completed | May 8, 2026, 2:26 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69fdf35ce9c48190b3a107bda3ffd126 |
completed | May 8, 2026, 2:29 p.m. |
Created at: April 10, 2026, 1:27 a.m.