Triple

T4572256
Position Surface form Disambiguated ID Type / Status
Subject Mystic, Connecticut E123057 entity
Predicate hasLandmark P105 FINISHED
Object Bascule Bridge over Mystic River
The Bascule Bridge over the Mystic River is a historic, counterweight-operated drawbridge in Mystic, Connecticut, known as an iconic symbol of the town and a key crossing in its waterfront district.
E548846 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: Bascule Bridge over Mystic River | Statement: [Mystic, Connecticut, hasLandmark, Bascule Bridge over Mystic River]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Bascule Bridge over Mystic River
Context triple: [Mystic, Connecticut, hasLandmark, Bascule Bridge over Mystic River]
  • A. Charles Berry Bascule Bridge
    The Charles Berry Bascule Bridge is a historic movable drawbridge in Lorain, Ohio, known for carrying U.S. Route 6 over the Black River and serving as a prominent local landmark.
  • B. Wasauksing Swing Bridge
    The Wasauksing Swing Bridge is a movable bridge in Ontario, Canada that provides the primary road and rail access between Parry Island (home of the Wasauksing First Nation) and the mainland.
  • C. Mystic River Bridge
    The Mystic River Bridge, officially known as the Maurice J. Tobin Memorial Bridge, is a major steel cantilever roadway bridge in Boston, Massachusetts, carrying U.S. Route 1 over the Mystic River between Charlestown and Chelsea.
  • D. Sagamore Bridge
    Sagamore Bridge is a major highway bridge in Massachusetts that carries traffic over the Cape Cod Canal, serving as one of the primary gateways to Cape Cod.
  • E. Milford–Montague Toll Bridge
    The Milford–Montague Toll Bridge is a vehicular bridge carrying U.S. Route 206 across the Delaware River between Pennsylvania and New Jersey, operated as a tolled crossing by the Delaware River Joint Toll Bridge Commission.
  • 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: Bascule Bridge over Mystic River
Triple: [Mystic, Connecticut, hasLandmark, Bascule Bridge over Mystic River]
Generated description
The Bascule Bridge over the Mystic River is a historic, counterweight-operated drawbridge in Mystic, Connecticut, known as an iconic symbol of the town and a key crossing in its waterfront district.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Bascule Bridge over Mystic River
Target entity description: The Bascule Bridge over the Mystic River is a historic, counterweight-operated drawbridge in Mystic, Connecticut, known as an iconic symbol of the town and a key crossing in its waterfront district.
  • A. Charles Berry Bascule Bridge
    The Charles Berry Bascule Bridge is a historic movable drawbridge in Lorain, Ohio, known for carrying U.S. Route 6 over the Black River and serving as a prominent local landmark.
  • B. Wasauksing Swing Bridge
    The Wasauksing Swing Bridge is a movable bridge in Ontario, Canada that provides the primary road and rail access between Parry Island (home of the Wasauksing First Nation) and the mainland.
  • C. Mystic River Bridge
    The Mystic River Bridge, officially known as the Maurice J. Tobin Memorial Bridge, is a major steel cantilever roadway bridge in Boston, Massachusetts, carrying U.S. Route 1 over the Mystic River between Charlestown and Chelsea.
  • D. Sagamore Bridge
    Sagamore Bridge is a major highway bridge in Massachusetts that carries traffic over the Cape Cod Canal, serving as one of the primary gateways to Cape Cod.
  • E. Milford–Montague Toll Bridge
    The Milford–Montague Toll Bridge is a vehicular bridge carrying U.S. Route 206 across the Delaware River between Pennsylvania and New Jersey, operated as a tolled crossing by the Delaware River Joint Toll Bridge Commission.
  • 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_69bd46466c7081909d07f36be2d08804 completed March 20, 2026, 1:06 p.m.
NER Named-entity recognition batch_69bd58c711408190a2b096daf57e6eac completed March 20, 2026, 2:25 p.m.
NED1 Entity disambiguation (via context triple) batch_69c097a5c6a4819082f4b9bf113ea33b completed March 23, 2026, 1:30 a.m.
NEDg Description generation batch_69c0992baa3c8190a6451ef98f8d29e4 completed March 23, 2026, 1:36 a.m.
NED2 Entity disambiguation (via description) batch_69c09990da18819099fdc8f25f2ddef2 completed March 23, 2026, 1:38 a.m.
Created at: March 20, 2026, 1:10 p.m.