Triple

T9928675
Position Surface form Disambiguated ID Type / Status
Subject Allegheny Observatory E192586 entity
Predicate hasTelescope P35 FINISHED
Object Keeler Memorial Reflector
The Keeler Memorial Reflector is a historic large reflecting telescope associated with pioneering astronomical research at the Allegheny Observatory.
 E829227 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: Keeler Memorial Reflector | Statement: [Allegheny Observatory, hasTelescope, Keeler Memorial Reflector]

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: Keeler Memorial Reflector
Context triple: [Allegheny Observatory, hasTelescope, Keeler Memorial Reflector]
  • A. Clark Refractor
    The Clark Refractor is a historic 24-inch refracting telescope at Lowell Observatory, renowned for its role in early planetary observations and public astronomy outreach.
  • B. Hale Telescope
    The Hale Telescope is a historic 200-inch reflecting telescope at Palomar Observatory in California that was once the world’s largest and remains a landmark instrument in observational astronomy.
  • C. Swope Telescope
    The Swope Telescope is a 1-meter-class optical telescope at Chile’s Las Campanas Observatory, known for its role in supernova and transient object discoveries.
  • D. Palomar 18-inch Schmidt Telescope
    The Palomar 18-inch Schmidt Telescope is a small wide-field survey instrument at Palomar Observatory historically used for photographic sky surveys and the discovery of comets and asteroids.
  • E. Palomar 48-inch Schmidt Telescope
    The Palomar 48-inch Schmidt Telescope is a wide-field survey telescope at Palomar Observatory renowned for its major contributions to sky surveys and the discovery of numerous astronomical objects.
  • 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: Keeler Memorial Reflector
Target entity description: The Keeler Memorial Reflector is a historic large reflecting telescope associated with pioneering astronomical research at the Allegheny Observatory.
  • A. Clark Refractor
    The Clark Refractor is a historic 24-inch refracting telescope at Lowell Observatory, renowned for its role in early planetary observations and public astronomy outreach.
  • B. Hale Telescope
    The Hale Telescope is a historic 200-inch reflecting telescope at Palomar Observatory in California that was once the world’s largest and remains a landmark instrument in observational astronomy.
  • C. Swope Telescope
    The Swope Telescope is a 1-meter-class optical telescope at Chile’s Las Campanas Observatory, known for its role in supernova and transient object discoveries.
  • D. Palomar 18-inch Schmidt Telescope
    The Palomar 18-inch Schmidt Telescope is a small wide-field survey instrument at Palomar Observatory historically used for photographic sky surveys and the discovery of comets and asteroids.
  • E. Palomar 48-inch Schmidt Telescope
    The Palomar 48-inch Schmidt Telescope is a wide-field survey telescope at Palomar Observatory renowned for its major contributions to sky surveys and the discovery of numerous astronomical objects.
  • 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: Keeler Memorial Reflector
Triple: [Allegheny Observatory, hasTelescope, Keeler Memorial Reflector]
Generated description
The Keeler Memorial Reflector is a historic large reflecting telescope associated with pioneering astronomical research at the Allegheny Observatory.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69ca82dd978c8190947124ab0d3315ac elicitation completed
NER batch_69cdb59d7ad08190982a1584547190bd ner completed
NED1 batch_69d20e258e888190ae4e2abac80e3399 ned_source_triple completed
NED2 batch_69d212a46ee48190aa629a189dee531d ned_description completed
NEDg batch_69d21229a1188190899df0d8d7f78a7d nedg completed
Created at: March 30, 2026, 8:43 p.m.