Triple

T1757020
Position Surface form Disambiguated ID Type / Status
Subject Anacostia River E38570 entity
Predicate hasBridge P386 FINISHED
Object Frederick Douglass Memorial Bridge
The Frederick Douglass Memorial Bridge is a major vehicular and pedestrian bridge in Washington, D.C., named in honor of abolitionist Frederick Douglass and serving as a key gateway into the city.
E394215 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: Frederick Douglass Memorial Bridge | Statement: [Anacostia River, hasBridge, Frederick Douglass Memorial Bridge]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Frederick Douglass Memorial Bridge
Context triple: [Anacostia River, hasBridge, Frederick Douglass Memorial Bridge]
  • A. Mark Twain Memorial Bridge
    The Mark Twain Memorial Bridge is a highway bridge over the Mississippi River near Hannibal, Missouri, named in honor of the famed American author Mark Twain.
  • B. Grenville Dodge Memorial Bridge
    The Grenville Dodge Memorial Bridge is a major highway bridge in the Omaha–Council Bluffs area that carries Interstate 480 across the Missouri River between Nebraska and Iowa.
  • C. John F. Kennedy Memorial Bridge
    The John F. Kennedy Memorial Bridge is a major Ohio River crossing in Louisville, Kentucky, carrying northbound traffic as part of the Interstate 65 corridor between Kentucky and Indiana.
  • D. Franklin Delano Roosevelt Bridge
    The Franklin Delano Roosevelt Bridge is an international bridge linking Campobello Island in New Brunswick, Canada, to the U.S. state of Maine, serving as the island’s only road connection to the mainland.
  • E. Walt Whitman Bridge
    The Walt Whitman Bridge is a major suspension bridge connecting Philadelphia, Pennsylvania, to Gloucester City, New Jersey, and serving as a key highway crossing over the Delaware River.
  • 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: Frederick Douglass Memorial Bridge
Triple: [Anacostia River, hasBridge, Frederick Douglass Memorial Bridge]
Generated description
The Frederick Douglass Memorial Bridge is a major vehicular and pedestrian bridge in Washington, D.C., named in honor of abolitionist Frederick Douglass and serving as a key gateway into the city.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Frederick Douglass Memorial Bridge
Target entity description: The Frederick Douglass Memorial Bridge is a major vehicular and pedestrian bridge in Washington, D.C., named in honor of abolitionist Frederick Douglass and serving as a key gateway into the city.
  • A. Mark Twain Memorial Bridge
    The Mark Twain Memorial Bridge is a highway bridge over the Mississippi River near Hannibal, Missouri, named in honor of the famed American author Mark Twain.
  • B. Grenville Dodge Memorial Bridge
    The Grenville Dodge Memorial Bridge is a major highway bridge in the Omaha–Council Bluffs area that carries Interstate 480 across the Missouri River between Nebraska and Iowa.
  • C. John F. Kennedy Memorial Bridge
    The John F. Kennedy Memorial Bridge is a major Ohio River crossing in Louisville, Kentucky, carrying northbound traffic as part of the Interstate 65 corridor between Kentucky and Indiana.
  • D. Franklin Delano Roosevelt Bridge
    The Franklin Delano Roosevelt Bridge is an international bridge linking Campobello Island in New Brunswick, Canada, to the U.S. state of Maine, serving as the island’s only road connection to the mainland.
  • E. Walt Whitman Bridge
    The Walt Whitman Bridge is a major suspension bridge connecting Philadelphia, Pennsylvania, to Gloucester City, New Jersey, and serving as a key highway crossing over the Delaware River.
  • 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_69a8862bdb2081908aefe831c8aa8017 completed March 4, 2026, 7:21 p.m.
NER Named-entity recognition batch_69aa643ce88481909d2feef3c5fd849f completed March 6, 2026, 5:21 a.m.
NED1 Entity disambiguation (via context triple) batch_69b511ebd11c8190ba5a6917d3731de9 completed March 14, 2026, 7:44 a.m.
NEDg Description generation batch_69b5126d8cf88190ac7cd7fdca54eddc completed March 14, 2026, 7:46 a.m.
NED2 Entity disambiguation (via description) batch_69b513289494819090a2d527780c2cc6 completed March 14, 2026, 7:50 a.m.
Created at: March 4, 2026, 7:31 p.m.