Triple

T17993886
Position Surface form Disambiguated ID Type / Status
Subject East Bay Regional Park District E430449 entity
Predicate operates P24 FINISHED
Object Iron Horse Regional Trail — NE NERFINISHED

How this triple was built (2 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: Iron Horse Regional Trail | Statement: [East Bay Regional Park District, operates, Iron Horse Regional Trail]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Iron Horse Regional Trail
Context triple: [East Bay Regional Park District, operates, Iron Horse Regional Trail]
  • A. Iron Horse Regional Trail chosen
    The Iron Horse Regional Trail is a multi-use, paved rail-trail in California’s East Bay that follows a former railroad corridor through several communities, including Danville.
  • B. Hurley Rail Trail
    Hurley Rail Trail is a multi-use recreational path in Ulster County, New York, popular for walking, running, and cycling along a former railroad corridor.
  • C. Heritage Rail Trail
    Heritage Rail Trail is a multi-use recreational path in Hilliard, Ohio, that follows a former railroad corridor and is popular for walking, running, and cycling.
  • D. Galloping Goose Regional Trail
    The Galloping Goose Regional Trail is a popular multi-use recreational trail on southern Vancouver Island, British Columbia, known for its scenic cycling, walking, and horseback riding routes through urban, rural, and wilderness landscapes.
  • E. Indian Head Rail Trail
    Indian Head Rail Trail is a multi-use recreational path in Charles County, Maryland, converted from a former railroad corridor and popular for walking, running, and cycling.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (2 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_69d8b90364248190a37381adea932f42 completed April 10, 2026, 8:46 a.m.
NER Named-entity recognition batch_69e4b3e29490819090ff221e7d7a9ddd completed April 19, 2026, 10:52 a.m.
Created at: April 10, 2026, 10:23 a.m.