Triple

T4837673
Position Surface form Disambiguated ID Type / Status
Subject Dar es Salaam E108100 entity
Predicate railConnection P848 FINISHED
Object Central Line
The Central Line is a major railway in Tanzania that runs from Dar es Salaam inland, serving as a key transport corridor across the country.
 E475395 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: Central Line | Statement: [Dar es Salaam, railConnection, Central Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Central Line
Context triple: [Dar es Salaam, railConnection, Central Line]
  • A. Central Line
    The Central Line is one of the major suburban railway corridors in Mumbai, India, connecting the city with its eastern and northeastern suburbs and satellite towns.
  • B. Central line
    The Central line is one of the principal lines of the London Underground, running east–west across Greater London and serving many key central and suburban areas.
  • C. Copperline
    "Copperline" is a reflective folk-rock song by American singer-songwriter James Taylor, known for its nostalgic lyrics about his North Carolina childhood.
  • D. Coast Line
    Coast Line was a major Southern Pacific Railroad route running along California’s Pacific coast, connecting key cities such as Los Angeles and San Francisco.
  • E. Southern Line
    The Southern Line is a key suburban rail route in Auckland, New Zealand, connecting central Auckland with southern suburbs and towns.
  • 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: Central Line
Triple: [Dar es Salaam, railConnection, Central Line]
Generated description
The Central Line is a major railway in Tanzania that runs from Dar es Salaam inland, serving as a key transport corridor across the country.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Central Line
Target entity description: The Central Line is a major railway in Tanzania that runs from Dar es Salaam inland, serving as a key transport corridor across the country.
  • A. Central Line
    The Central Line is one of the major suburban railway corridors in Mumbai, India, connecting the city with its eastern and northeastern suburbs and satellite towns.
  • B. Central line
    The Central line is one of the principal lines of the London Underground, running east–west across Greater London and serving many key central and suburban areas.
  • C. Copperline
    "Copperline" is a reflective folk-rock song by American singer-songwriter James Taylor, known for its nostalgic lyrics about his North Carolina childhood.
  • D. Coast Line
    Coast Line was a major Southern Pacific Railroad route running along California’s Pacific coast, connecting key cities such as Los Angeles and San Francisco.
  • E. Southern Line
    The Southern Line is a key suburban rail route in Auckland, New Zealand, connecting central Auckland with southern suburbs and towns.
  • 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_69bd43fbe444819085cb970706ef73f7 completed March 20, 2026, 12:56 p.m.
NER Named-entity recognition batch_69bd6ce2e810819089f9a3f2a7574d44 completed March 20, 2026, 3:50 p.m.
NED1 Entity disambiguation (via context triple) batch_69be5cc054ac819099d6d3dbf415e710 completed March 21, 2026, 8:54 a.m.
NEDg Description generation batch_69be60d4fa0c8190b6d197eb3dbafff7 completed March 21, 2026, 9:11 a.m.
NED2 Entity disambiguation (via description) batch_69be61789d388190bc23d7f44cee2e5d completed March 21, 2026, 9:14 a.m.
Created at: March 20, 2026, 1:25 p.m.