Triple
T6348874
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Route 13 trolley |
E142817
|
entity |
| Predicate | undergroundSection |
P15152
|
FINISHED |
| Object | Center City subway–surface tunnel |
E158131
|
NE FINISHED |
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: Center City subway–surface tunnel | Statement: [Route 13 trolley, undergroundSection, Center City subway–surface tunnel]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Center City subway–surface tunnel Context triple: [Route 13 trolley, undergroundSection, Center City subway–surface tunnel]
-
A.
Center City Tunnel
chosen
Center City Tunnel is an underground rail corridor in downtown Philadelphia that links several major commuter rail lines to create a unified through-running system.
-
B.
Downtown Tunnel
The Downtown Tunnel is a major underwater vehicular tunnel in the Hampton Roads region that carries traffic beneath the Elizabeth River between Norfolk and Portsmouth, Virginia.
-
C.
53rd Street Tunnel
The 53rd Street Tunnel is a New York City Subway tunnel under the East River that carries IND Queens Boulevard Line trains between Manhattan and Queens.
-
D.
Midtown Tunnel
The Midtown Tunnel is a vehicular tunnel in the Hampton Roads region that carries traffic beneath the Elizabeth River between Norfolk and Portsmouth, Virginia.
-
E.
Hudson–Bergen light rail tunnels
The Hudson–Bergen light rail tunnels are a set of underground passages in northeastern New Jersey that carry the Hudson–Bergen Light Rail system beneath the Hudson River waterfront and surrounding urban areas.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: undergroundSection Context triple: [Route 13 trolley, undergroundSection, Center City subway–surface tunnel]
-
A.
undergroundBranch
Indicates that one entity is a branch or extension of another that operates or exists in a hidden, secret, or non-public manner.
-
B.
hasUndergroundSection
chosen
Indicates that an entity includes a portion or segment that is located below ground level.
-
C.
subterranean
Indicates that one entity is located beneath the surface of the ground or under another structure or area.
-
D.
undergroundAlternateCommandCenter
Indicates a facility serving as a backup or secondary command center that is located underground.
-
E.
hasUndergroundDepth
Indicates that one entity has a specified vertical extent or depth located below the ground surface relative to another reference or context.
- F. None of above.
Provenance (4 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_69c008d6dcbc8190aa1c2f1fd8916b42 |
completed | March 22, 2026, 3:20 p.m. |
| NER | Named-entity recognition | batch_69c067bba1988190b51f0a22e4279e1b |
completed | March 22, 2026, 10:05 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c6044fcd288190abdc5746e2904928 |
completed | March 27, 2026, 4:15 a.m. |
| PD | Predicate disambiguation | batch_69c060ea1a988190889e47b7e0c819b8 |
completed | March 22, 2026, 9:36 p.m. |
Created at: March 22, 2026, 4:31 p.m.