Triple

T7492733
Position Surface form Disambiguated ID Type / Status
Subject Tabora–Kigoma railway E177044 entity
Predicate connectsTo P845 FINISHED
Object Central Line at Tabora
The Central Line at Tabora is a key junction on Tanzania’s main east–west railway corridor, linking the central rail network with the Tabora–Kigoma line and facilitating passenger and freight movement across the country.
E667765 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 at Tabora | Statement: [Tabora–Kigoma railway, connectsTo, Central Line at Tabora]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Central Line at Tabora
Context triple: [Tabora–Kigoma railway, connectsTo, Central Line at Tabora]
  • A. Tarka Line
    The Tarka Line is a scenic rural railway route in Devon, England, running between Exeter and Barnstaple through the countryside associated with Henry Williamson’s novel "Tarka the Otter."
  • B. Batong Line
    The Batong Line is a rapid transit line in Beijing that extends the Beijing Subway network eastward into the suburban Tongzhou District.
  • C. Tabaran
    Tabaran is a 1987 world-fusion album by Australian band Not Drowning, Waving, created in collaboration with musicians from Papua New Guinea.
  • D. Hyoksin Line
    The Hyoksin Line is one of the main lines of the Pyongyang Metro system in North Korea, serving several central and residential districts of the capital.
  • E. Nijubashi
    Nijubashi is a famous pair of bridges at the main entrance to Tokyo’s Imperial Palace, known as an iconic historic and photographic landmark in Japan.
  • 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 at Tabora
Triple: [Tabora–Kigoma railway, connectsTo, Central Line at Tabora]
Generated description
The Central Line at Tabora is a key junction on Tanzania’s main east–west railway corridor, linking the central rail network with the Tabora–Kigoma line and facilitating passenger and freight movement across the country.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Central Line at Tabora
Target entity description: The Central Line at Tabora is a key junction on Tanzania’s main east–west railway corridor, linking the central rail network with the Tabora–Kigoma line and facilitating passenger and freight movement across the country.
  • A. Tarka Line
    The Tarka Line is a scenic rural railway route in Devon, England, running between Exeter and Barnstaple through the countryside associated with Henry Williamson’s novel "Tarka the Otter."
  • B. Batong Line
    The Batong Line is a rapid transit line in Beijing that extends the Beijing Subway network eastward into the suburban Tongzhou District.
  • C. Tabaran
    Tabaran is a 1987 world-fusion album by Australian band Not Drowning, Waving, created in collaboration with musicians from Papua New Guinea.
  • D. Hyoksin Line
    The Hyoksin Line is one of the main lines of the Pyongyang Metro system in North Korea, serving several central and residential districts of the capital.
  • E. Nijubashi
    Nijubashi is a famous pair of bridges at the main entrance to Tokyo’s Imperial Palace, known as an iconic historic and photographic landmark in Japan.
  • 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_69c69f2583808190bd1a4936c42a5815 completed March 27, 2026, 3:15 p.m.
NER Named-entity recognition batch_69c6f5784c908190b701959daf082625 completed March 27, 2026, 9:24 p.m.
NED1 Entity disambiguation (via context triple) batch_69c83c7c60b8819090f2c4b16332c557 completed March 28, 2026, 8:39 p.m.
NEDg Description generation batch_69c83e50fac08190bdcceef0c5f55244 completed March 28, 2026, 8:47 p.m.
NED2 Entity disambiguation (via description) batch_69c83ebff75c81908313e6df6f76d3f0 completed March 28, 2026, 8:49 p.m.
Created at: March 27, 2026, 3:43 p.m.