Triple

T21410902
Position Surface form Disambiguated ID Type / Status
Subject Three Rivers Heritage Trail segments within Pittsburgh E528163 entity
Predicate hasSegment P3574 FINISHED
Object Millvale riverfront segment
The Millvale riverfront segment is a stretch of multi-use recreational trail along the Allegheny River in Millvale, Pennsylvania, forming part of Pittsburgh’s larger Three Rivers Heritage Trail system.
 E1482132 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: Millvale riverfront segment | Statement: [Three Rivers Heritage Trail segments within Pittsburgh, hasSegment, Millvale riverfront segment]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Millvale riverfront segment
Context triple: [Three Rivers Heritage Trail segments within Pittsburgh, hasSegment, Millvale riverfront segment]
  • A. Schuylkill River waterfront
    The Schuylkill River waterfront is a developed riverside area along the Schuylkill River featuring recreational paths, scenic views, and mixed-use urban spaces.
  • B. Allegheny River waterfront
    The Allegheny River waterfront is a stretch of riverfront along the Allegheny River featuring recreational, scenic, and community spaces in and around New Kensington, Pennsylvania.
  • C. Harrisburg riverfront
    The Harrisburg riverfront is a scenic urban area along the Susquehanna River in Harrisburg, Pennsylvania, featuring parks, trails, historic structures, and recreational spaces.
  • D. Monongahela Riverfront Park
    Monongahela Riverfront Park is a public recreational green space along the Monongahela River in Monongahela, Pennsylvania, featuring walking paths, river views, and community gathering areas.
  • E. Schuylkill Yards development area
    Schuylkill Yards development area is a major mixed-use innovation district under development in University City, Philadelphia, featuring offices, labs, residential space, and public parks near 30th Street Station.
  • 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: Millvale riverfront segment
Triple: [Three Rivers Heritage Trail segments within Pittsburgh, hasSegment, Millvale riverfront segment]
Generated description
The Millvale riverfront segment is a stretch of multi-use recreational trail along the Allegheny River in Millvale, Pennsylvania, forming part of Pittsburgh’s larger Three Rivers Heritage Trail system.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Millvale riverfront segment
Target entity description: The Millvale riverfront segment is a stretch of multi-use recreational trail along the Allegheny River in Millvale, Pennsylvania, forming part of Pittsburgh’s larger Three Rivers Heritage Trail system.
  • A. Schuylkill River waterfront
    The Schuylkill River waterfront is a developed riverside area along the Schuylkill River featuring recreational paths, scenic views, and mixed-use urban spaces.
  • B. Allegheny River waterfront
    The Allegheny River waterfront is a stretch of riverfront along the Allegheny River featuring recreational, scenic, and community spaces in and around New Kensington, Pennsylvania.
  • C. Harrisburg riverfront
    The Harrisburg riverfront is a scenic urban area along the Susquehanna River in Harrisburg, Pennsylvania, featuring parks, trails, historic structures, and recreational spaces.
  • D. Monongahela Riverfront Park
    Monongahela Riverfront Park is a public recreational green space along the Monongahela River in Monongahela, Pennsylvania, featuring walking paths, river views, and community gathering areas.
  • E. Schuylkill Yards development area
    Schuylkill Yards development area is a major mixed-use innovation district under development in University City, Philadelphia, featuring offices, labs, residential space, and public parks near 30th Street Station.
  • 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_69e0c454c248819093425d1099101c09 completed April 16, 2026, 11:13 a.m.
NER Named-entity recognition batch_69e8b1b6595481908cdf915e3585ed08 completed April 22, 2026, 11:32 a.m.
NED1 Entity disambiguation (via context triple) batch_6a09bb590c888190bb5129341552cdb3 completed May 17, 2026, 12:58 p.m.
NEDg Description generation batch_6a09bea578348190a3cc8a652c7fc362 completed May 17, 2026, 1:12 p.m.
NED2 Entity disambiguation (via description) batch_6a09bf5645348190a2ef7bd49a0237d8 completed May 17, 2026, 1:15 p.m.
Created at: April 16, 2026, 5:43 p.m.