Triple

T15405358
Position Surface form Disambiguated ID Type / Status
Subject Cobb Estate E368437 entity
Predicate trailheadFor P11755 FINISHED
Object Sam Merrill Trail
The Sam Merrill Trail is a popular hiking route in the San Gabriel Mountains of Southern California that climbs from the foothills above Pasadena to the historic Echo Mountain and the ruins of the old Echo Mountain House and Mount Lowe Railway.
 E1155126 NE FINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

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: Sam Merrill Trail | Statement: [Cobb Estate, trailheadFor, Sam Merrill Trail]

Disambiguation candidates (2 decisions)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Sam Merrill Trail
Context triple: [Cobb Estate, trailheadFor, Sam Merrill Trail]
  • A. Verna Dunshee Trail
    The Verna Dunshee Trail is a short, paved loop trail near the summit of Mount Tamalpais in Marin County, California, offering panoramic views of the San Francisco Bay Area.
  • B. Jeff Friend Trail
    Jeff Friend Trail is a short, accessible nature trail in Alabama’s Bon Secour National Wildlife Refuge that offers boardwalk and sandy paths through coastal habitats with views of Little Lagoon and opportunities for birdwatching.
  • C. Greeneway Trail
    Greeneway Trail is a popular multi-use recreational path in North Augusta, South Carolina, known for its scenic riverside views and opportunities for walking, running, and cycling.
  • D. Swenson Trail
    Swenson Trail is a hiking path located within Stokes State Forest in New Jersey, offering access to the park’s natural scenery and outdoor recreation.
  • E. Lawrence Hopewell Trail
    The Lawrence Hopewell Trail is a multi-use recreational path in Mercer County, New Jersey, that offers walking, running, and cycling routes through local parks, neighborhoods, and natural areas.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Sam Merrill Trail
Target entity description: The Sam Merrill Trail is a popular hiking route in the San Gabriel Mountains of Southern California that climbs from the foothills above Pasadena to the historic Echo Mountain and the ruins of the old Echo Mountain House and Mount Lowe Railway.
  • A. Verna Dunshee Trail
    The Verna Dunshee Trail is a short, paved loop trail near the summit of Mount Tamalpais in Marin County, California, offering panoramic views of the San Francisco Bay Area.
  • B. Jeff Friend Trail
    Jeff Friend Trail is a short, accessible nature trail in Alabama’s Bon Secour National Wildlife Refuge that offers boardwalk and sandy paths through coastal habitats with views of Little Lagoon and opportunities for birdwatching.
  • C. Greeneway Trail
    Greeneway Trail is a popular multi-use recreational path in North Augusta, South Carolina, known for its scenic riverside views and opportunities for walking, running, and cycling.
  • D. Swenson Trail
    Swenson Trail is a hiking path located within Stokes State Forest in New Jersey, offering access to the park’s natural scenery and outdoor recreation.
  • E. Lawrence Hopewell Trail
    The Lawrence Hopewell Trail is a multi-use recreational path in Mercer County, New Jersey, that offers walking, running, and cycling routes through local parks, neighborhoods, and natural areas.
  • F. None of above. chosen

How the object was described

The object's one-sentence description was generated by prompting gpt-5.1 with the object name and this triple as context.

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: Sam Merrill Trail
Triple: [Cobb Estate, trailheadFor, Sam Merrill Trail]
Generated description
The Sam Merrill Trail is a popular hiking route in the San Gabriel Mountains of Southern California that climbs from the foothills above Pasadena to the historic Echo Mountain and the ruins of the old Echo Mountain House and Mount Lowe Railway.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69d85a16c68c819099c1b547fbc87b32 elicitation completed
NER batch_69e03e8fde64819082ec0c68df305561 ner completed
NED1 batch_69ff135a26f08190ad3fc1d5a263a24e ned_source_triple completed
NED2 batch_69ff15ae7c9c81909fd0894e48e5b5b1 ned_description completed
NEDg batch_69ff144af00481909191a2d33874c195 nedg completed
Created at: April 10, 2026, 3:20 a.m.