Triple

T23461702
Position Surface form Disambiguated ID Type / Status
Subject John E. Hopcroft E568994 entity
Predicate knownFor P22 FINISHED
Object Hopcroft–Tarjan planarity algorithm
The Hopcroft–Tarjan planarity algorithm is a classic linear-time graph algorithm that determines whether a graph can be drawn in the plane without edge crossings and, if so, constructs such an embedding.
E1589758 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: Hopcroft–Tarjan planarity algorithm | Statement: [John E. Hopcroft, knownFor, Hopcroft–Tarjan planarity algorithm]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Hopcroft–Tarjan planarity algorithm
Context triple: [John E. Hopcroft, knownFor, Hopcroft–Tarjan planarity algorithm]
  • A. Lipton–Tarjan separator theorem
    The Lipton–Tarjan separator theorem is a fundamental result in graph theory that shows any planar graph can be efficiently divided into roughly equal parts by removing only a relatively small set of vertices, enabling faster algorithms for many computational problems.
  • B. Kuratowski’s theorem on planar graphs
    Kuratowski’s theorem on planar graphs is a fundamental result in graph theory that characterizes planar graphs by stating that a finite graph is planar if and only if it contains no subgraph that is a subdivision of the complete graph K₅ or the complete bipartite graph K₃,₃.
  • C. Tarjan's strongly connected components algorithm
    Tarjan's strongly connected components algorithm is a classic linear-time graph algorithm that efficiently identifies all strongly connected components in a directed graph using depth-first search and low-link values.
  • D. Fleury's algorithm
    Fleury's algorithm is a classical graph-theoretic procedure for systematically finding an Eulerian trail by repeatedly choosing edges that are not bridges unless necessary.
  • E. Hierholzer's algorithm
    Hierholzer's algorithm is a classical graph algorithm that efficiently constructs an Eulerian trail or circuit by iteratively building and merging cycles in a graph where such a trail exists.
  • 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: Hopcroft–Tarjan planarity algorithm
Triple: [John E. Hopcroft, knownFor, Hopcroft–Tarjan planarity algorithm]
Generated description
The Hopcroft–Tarjan planarity algorithm is a classic linear-time graph algorithm that determines whether a graph can be drawn in the plane without edge crossings and, if so, constructs such an embedding.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Hopcroft–Tarjan planarity algorithm
Target entity description: The Hopcroft–Tarjan planarity algorithm is a classic linear-time graph algorithm that determines whether a graph can be drawn in the plane without edge crossings and, if so, constructs such an embedding.
  • A. Lipton–Tarjan separator theorem
    The Lipton–Tarjan separator theorem is a fundamental result in graph theory that shows any planar graph can be efficiently divided into roughly equal parts by removing only a relatively small set of vertices, enabling faster algorithms for many computational problems.
  • B. Kuratowski’s theorem on planar graphs
    Kuratowski’s theorem on planar graphs is a fundamental result in graph theory that characterizes planar graphs by stating that a finite graph is planar if and only if it contains no subgraph that is a subdivision of the complete graph K₅ or the complete bipartite graph K₃,₃.
  • C. Tarjan's strongly connected components algorithm
    Tarjan's strongly connected components algorithm is a classic linear-time graph algorithm that efficiently identifies all strongly connected components in a directed graph using depth-first search and low-link values.
  • D. Fleury's algorithm
    Fleury's algorithm is a classical graph-theoretic procedure for systematically finding an Eulerian trail by repeatedly choosing edges that are not bridges unless necessary.
  • E. Hierholzer's algorithm
    Hierholzer's algorithm is a classical graph algorithm that efficiently constructs an Eulerian trail or circuit by iteratively building and merging cycles in a graph where such a trail exists.
  • 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_69e2458ebd808190b3298163132cfb0b completed April 17, 2026, 2:37 p.m.
NER Named-entity recognition batch_69f1a69bc200819096ed2baf25cdee4f completed April 29, 2026, 6:35 a.m.
NED1 Entity disambiguation (via context triple) batch_6a0c825113588190a251450dc28f737b completed May 19, 2026, 3:31 p.m.
NEDg Description generation batch_6a0ca6eee2f48190b4e03039c4c96abe completed May 19, 2026, 6:07 p.m.
NED2 Entity disambiguation (via description) batch_6a0ca819f6dc8190852bb3c06768ac5a completed May 19, 2026, 6:12 p.m.
Created at: April 17, 2026, 5:54 p.m.