Triple

T18552135
Position Surface form Disambiguated ID Type / Status
Subject Cassiopeia E453402 entity
Predicate containsSupernovaRemnant P22650 FINISHED
Object Cassiopeia A
Cassiopeia A is a well-studied, relatively young supernova remnant in the constellation Cassiopeia and one of the strongest radio and X-ray sources in the sky.
 E1330060 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: Cassiopeia A | Statement: [Cassiopeia, containsSupernovaRemnant, Cassiopeia A]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Cassiopeia A
Context triple: [Cassiopeia, containsSupernovaRemnant, Cassiopeia A]
  • A. Crab Nebula
    The Crab Nebula is a famous supernova remnant and pulsar wind nebula in the constellation Taurus, formed by a stellar explosion observed on Earth in 1054 AD.
  • B. SN 1987A
    SN 1987A is a famous supernova, the closest observed in modern times, whose 1987 explosion in the Large Magellanic Cloud has provided key insights into stellar death and supernova physics.
  • C. Monoceros Loop supernova remnant
    The Monoceros Loop supernova remnant is a large, faint shell of gas and dust in the constellation Monoceros, believed to be the remains of an ancient supernova explosion.
  • D. Baade’s star
    Baade’s star is a luminous, variable star in the Andromeda Galaxy notable for its role in Walter Baade’s work refining the cosmic distance scale.
  • E. Cygnus Loop
    The Cygnus Loop is a large, faint supernova remnant in the constellation Cygnus, encompassing several prominent nebulae such as the Veil Nebula.
  • 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: Cassiopeia A
Triple: [Cassiopeia, containsSupernovaRemnant, Cassiopeia A]
Generated description
Cassiopeia A is a well-studied, relatively young supernova remnant in the constellation Cassiopeia and one of the strongest radio and X-ray sources in the sky.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Cassiopeia A
Target entity description: Cassiopeia A is a well-studied, relatively young supernova remnant in the constellation Cassiopeia and one of the strongest radio and X-ray sources in the sky.
  • A. Crab Nebula
    The Crab Nebula is a famous supernova remnant and pulsar wind nebula in the constellation Taurus, formed by a stellar explosion observed on Earth in 1054 AD.
  • B. SN 1987A
    SN 1987A is a famous supernova, the closest observed in modern times, whose 1987 explosion in the Large Magellanic Cloud has provided key insights into stellar death and supernova physics.
  • C. Monoceros Loop supernova remnant
    The Monoceros Loop supernova remnant is a large, faint shell of gas and dust in the constellation Monoceros, believed to be the remains of an ancient supernova explosion.
  • D. Baade’s star
    Baade’s star is a luminous, variable star in the Andromeda Galaxy notable for its role in Walter Baade’s work refining the cosmic distance scale.
  • E. Cygnus Loop
    The Cygnus Loop is a large, faint supernova remnant in the constellation Cygnus, encompassing several prominent nebulae such as the Veil Nebula.
  • 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_69d8d388b0c881908e610a1c45b52640 completed April 10, 2026, 10:40 a.m.
NER Named-entity recognition batch_69e538019a74819099dbd255fb21fa95 completed April 19, 2026, 8:16 p.m.
NED1 Entity disambiguation (via context triple) batch_6a049adfedf4819094904078d0707fec completed May 13, 2026, 3:38 p.m.
NEDg Description generation batch_6a049c355cb08190a63addeba8293e5c completed May 13, 2026, 3:43 p.m.
NED2 Entity disambiguation (via description) batch_6a049cfa32588190a6e4abf128aced0a completed May 13, 2026, 3:47 p.m.
Created at: April 10, 2026, 11:38 a.m.