Triple

T89931
Position Surface form Disambiguated ID Type / Status
Subject Charles River E1807 entity
Predicate hasBridge P386 FINISHED
Object Longfellow Bridge
Longfellow Bridge is a historic steel and granite bridge in Boston, Massachusetts, known for carrying road and rail traffic between Boston and Cambridge across the Charles River.
E35507 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: Longfellow Bridge | Statement: [Charles River, hasBridge, Longfellow Bridge]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Longfellow Bridge
Context triple: [Charles River, hasBridge, Longfellow Bridge]
  • A. 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.
  • B. Memorial Bridge
    Memorial Bridge is a prominent ceremonial bridge spanning the Potomac River, symbolically linking Arlington National Cemetery with the Lincoln Memorial in Washington, D.C.
  • C. Theodore Roosevelt Bridge
    The Theodore Roosevelt Bridge is a major highway bridge over the Potomac River in Washington, D.C., carrying traffic between the city and Arlington, Virginia.
  • D. St. Johns Bridge
    St. Johns Bridge is a historic steel suspension bridge in Portland, Oregon, noted for its striking Gothic-style towers and scenic span over the Willamette River.
  • E. Woodrow Wilson Bridge
    The Woodrow Wilson Bridge is a major bascule highway bridge carrying the Capital Beltway (I-95/I-495) between Virginia and Maryland just south of Washington, D.C.
  • 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: Longfellow Bridge
Triple: [Charles River, hasBridge, Longfellow Bridge]
Generated description
Longfellow Bridge is a historic steel and granite bridge in Boston, Massachusetts, known for carrying road and rail traffic between Boston and Cambridge across the Charles River.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Longfellow Bridge
Target entity description: Longfellow Bridge is a historic steel and granite bridge in Boston, Massachusetts, known for carrying road and rail traffic between Boston and Cambridge across the Charles River.
  • A. 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.
  • B. Memorial Bridge
    Memorial Bridge is a prominent ceremonial bridge spanning the Potomac River, symbolically linking Arlington National Cemetery with the Lincoln Memorial in Washington, D.C.
  • C. Theodore Roosevelt Bridge
    The Theodore Roosevelt Bridge is a major highway bridge over the Potomac River in Washington, D.C., carrying traffic between the city and Arlington, Virginia.
  • D. St. Johns Bridge
    St. Johns Bridge is a historic steel suspension bridge in Portland, Oregon, noted for its striking Gothic-style towers and scenic span over the Willamette River.
  • E. Woodrow Wilson Bridge
    The Woodrow Wilson Bridge is a major bascule highway bridge carrying the Capital Beltway (I-95/I-495) between Virginia and Maryland just south of Washington, D.C.
  • 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_69a24d1a97dc819094e6c021fe9b05a7 completed Feb. 28, 2026, 2:04 a.m.
NER Named-entity recognition batch_69a383e3575c8190932dcdc25503d06e completed March 1, 2026, 12:10 a.m.
NED1 Entity disambiguation (via context triple) batch_69a38f4ad71881909f914571472c15fa completed March 1, 2026, 12:58 a.m.
NEDg Description generation batch_69a38fa022b88190938ab9a65a85ad2a completed March 1, 2026, 1 a.m.
NED2 Entity disambiguation (via description) batch_69a3901ce7f88190ab94662c43a6008b completed March 1, 2026, 1:02 a.m.
Created at: Feb. 28, 2026, 2:07 a.m.