Triple

T15838973
Position Surface form Disambiguated ID Type / Status
Subject ACIS E384052 entity
Predicate locatedOn P40 FINISHED
Object Chandra focal plane
The Chandra focal plane is the area within NASA’s Chandra X-ray Observatory where incoming X-rays are brought to focus and detected by instruments such as the Advanced CCD Imaging Spectrometer (ACIS).
 E1181736 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: Chandra focal plane | Statement: [ACIS, locatedOn, Chandra focal plane]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Chandra focal plane
Context triple: [ACIS, locatedOn, Chandra focal plane]
  • A. Chandra High Resolution Mirror Assembly
    The Chandra High Resolution Mirror Assembly is the precision X-ray telescope optics system on NASA’s Chandra X-ray Observatory, designed to focus high-energy X-rays with exceptionally fine angular resolution for astrophysical observations.
  • B. Focal Plane Crystal Spectrometer (FPCS)
    The Focal Plane Crystal Spectrometer (FPCS) was a high-resolution X-ray spectrometer aboard the Einstein Observatory, used to study the detailed spectra of cosmic X-ray sources.
  • C. Chandra’s Surface Thermophysical Experiment
    Chandra’s Surface Thermophysical Experiment is a scientific instrument on India’s Chandrayaan-2 lunar mission designed to study the Moon’s surface temperature and thermal properties.
  • D. Chandra’s Altitudinal Composition Explorer
    Chandra’s Altitudinal Composition Explorer is a scientific instrument designed to study the Moon’s atmospheric and surface composition at varying altitudes, flown aboard India’s Moon Impact Probe.
  • E. Faint Object Camera
    The Faint Object Camera was a high-resolution imaging instrument on the Hubble Space Telescope designed to observe very dim and distant astronomical objects in ultraviolet and visible light.
  • 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: Chandra focal plane
Triple: [ACIS, locatedOn, Chandra focal plane]
Generated description
The Chandra focal plane is the area within NASA’s Chandra X-ray Observatory where incoming X-rays are brought to focus and detected by instruments such as the Advanced CCD Imaging Spectrometer (ACIS).
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Chandra focal plane
Target entity description: The Chandra focal plane is the area within NASA’s Chandra X-ray Observatory where incoming X-rays are brought to focus and detected by instruments such as the Advanced CCD Imaging Spectrometer (ACIS).
  • A. Chandra High Resolution Mirror Assembly
    The Chandra High Resolution Mirror Assembly is the precision X-ray telescope optics system on NASA’s Chandra X-ray Observatory, designed to focus high-energy X-rays with exceptionally fine angular resolution for astrophysical observations.
  • B. Focal Plane Crystal Spectrometer (FPCS)
    The Focal Plane Crystal Spectrometer (FPCS) was a high-resolution X-ray spectrometer aboard the Einstein Observatory, used to study the detailed spectra of cosmic X-ray sources.
  • C. Chandra’s Surface Thermophysical Experiment
    Chandra’s Surface Thermophysical Experiment is a scientific instrument on India’s Chandrayaan-2 lunar mission designed to study the Moon’s surface temperature and thermal properties.
  • D. Chandra’s Altitudinal Composition Explorer
    Chandra’s Altitudinal Composition Explorer is a scientific instrument designed to study the Moon’s atmospheric and surface composition at varying altitudes, flown aboard India’s Moon Impact Probe.
  • E. Faint Object Camera
    The Faint Object Camera was a high-resolution imaging instrument on the Hubble Space Telescope designed to observe very dim and distant astronomical objects in ultraviolet and visible light.
  • 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_69d86da34c888190976e06c4019d415a completed April 10, 2026, 3:25 a.m.
NER Named-entity recognition batch_69e142e4fa24819086a1a226082ac2d3 completed April 16, 2026, 8:13 p.m.
NED1 Entity disambiguation (via context triple) batch_69ffa93ddce4819086174b2549f5e12b completed May 9, 2026, 9:38 p.m.
NEDg Description generation batch_69ffa9e9b17c8190b98d930fd5cb0723 completed May 9, 2026, 9:40 p.m.
NED2 Entity disambiguation (via description) batch_69ffaa973274819080889e1b9883b8dc completed May 9, 2026, 9:43 p.m.
Created at: April 10, 2026, 4:49 a.m.