Triple
T17394413
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Beacon Hill station |
E422912
|
entity |
| Predicate | tunnel |
P12895
|
FINISHED |
| Object |
Beacon Hill tunnel
Beacon Hill tunnel is an underground light rail tunnel in Seattle, Washington, carrying Sound Transit’s Link light rail beneath the Beacon Hill neighborhood.
|
E1265929
|
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: Beacon Hill tunnel | Statement: [Beacon Hill station, tunnel, Beacon Hill tunnel]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Beacon Hill tunnel Context triple: [Beacon Hill station, tunnel, Beacon Hill tunnel]
-
A.
Howard Street Tunnel
The Howard Street Tunnel is a historic railroad tunnel in Baltimore, Maryland, that carries freight trains beneath the city’s downtown.
-
B.
East Boston Tunnel
The East Boston Tunnel is a historic underwater transit tunnel in Boston that originally carried streetcars and now forms part of the MBTA’s Blue Line subway connection between downtown Boston and East Boston.
-
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.
Center City Tunnel
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.
- 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: Beacon Hill tunnel Triple: [Beacon Hill station, tunnel, Beacon Hill tunnel]
Generated description
Beacon Hill tunnel is an underground light rail tunnel in Seattle, Washington, carrying Sound Transit’s Link light rail beneath the Beacon Hill neighborhood.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Beacon Hill tunnel Target entity description: Beacon Hill tunnel is an underground light rail tunnel in Seattle, Washington, carrying Sound Transit’s Link light rail beneath the Beacon Hill neighborhood.
-
A.
Howard Street Tunnel
The Howard Street Tunnel is a historic railroad tunnel in Baltimore, Maryland, that carries freight trains beneath the city’s downtown.
-
B.
East Boston Tunnel
The East Boston Tunnel is a historic underwater transit tunnel in Boston that originally carried streetcars and now forms part of the MBTA’s Blue Line subway connection between downtown Boston and East Boston.
-
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.
Center City Tunnel
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.
- 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_69d889d710288190bf0f4762801fefae |
completed | April 10, 2026, 5:25 a.m. |
| NER | Named-entity recognition | batch_69e43abbd84881908af91bb7c9784026 |
completed | April 19, 2026, 2:15 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a019fff1d6c8190a80b6168f46e34b9 |
completed | May 11, 2026, 9:23 a.m. |
| NEDg | Description generation | batch_6a01a0ea3d3c8190b6c14eea5de3ba5b |
completed | May 11, 2026, 9:27 a.m. |
| NED2 | Entity disambiguation (via description) | batch_6a01a17c0acc8190a556b68fbcefaa76 |
completed | May 11, 2026, 9:29 a.m. |
Created at: April 10, 2026, 5:45 a.m.