Triple

T2300296
Position Surface form Disambiguated ID Type / Status
Subject Victoria Falls Bridge E51714 entity
Predicate builtFor P1261 FINISHED
Object Cape to Cairo Railway project
The Cape to Cairo Railway project was an ambitious but never fully realized British colonial scheme to create a continuous rail link spanning the African continent from South Africa to Egypt.
E253831 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: Cape to Cairo Railway project | Statement: [Victoria Falls Bridge, builtFor, Cape to Cairo Railway project]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Cape to Cairo Railway project
Context triple: [Victoria Falls Bridge, builtFor, Cape to Cairo Railway project]
  • A. Cairo–Aswan railway line
    The Cairo–Aswan railway line is a major Egyptian rail corridor running along the Nile Valley, connecting the capital Cairo with the southern city of Aswan and serving key urban centers in between.
  • B. Savanna railway
    The Savanna railway is a historic Colombian rail line that serves the Bogotá savanna region, including the town of Zipaquirá, and is now best known for its tourist and heritage train services.
  • C. Tanzania–Zambia Railway (TAZARA)
    The Tanzania–Zambia Railway (TAZARA) is a major bi-national rail line built with Chinese assistance that links landlocked Zambia to the Tanzanian port of Dar es Salaam, serving as a key transport and trade corridor in East and Southern Africa.
  • D. Cairo–Port Said line
    The Cairo–Port Said line is a major Egyptian railway route linking the capital Cairo with the Mediterranean port city of Port Said, serving as a key axis for passenger and freight transport in the Nile Delta.
  • E. Tabora–Mpanda railway
    The Tabora–Mpanda railway is a regional rail line in western Tanzania that connects the town of Tabora with Mpanda, supporting transport and economic activity across the area.
  • 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: Cape to Cairo Railway project
Triple: [Victoria Falls Bridge, builtFor, Cape to Cairo Railway project]
Generated description
The Cape to Cairo Railway project was an ambitious but never fully realized British colonial scheme to create a continuous rail link spanning the African continent from South Africa to Egypt.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Cape to Cairo Railway project
Target entity description: The Cape to Cairo Railway project was an ambitious but never fully realized British colonial scheme to create a continuous rail link spanning the African continent from South Africa to Egypt.
  • A. Cairo–Aswan railway line
    The Cairo–Aswan railway line is a major Egyptian rail corridor running along the Nile Valley, connecting the capital Cairo with the southern city of Aswan and serving key urban centers in between.
  • B. Savanna railway
    The Savanna railway is a historic Colombian rail line that serves the Bogotá savanna region, including the town of Zipaquirá, and is now best known for its tourist and heritage train services.
  • C. Tanzania–Zambia Railway (TAZARA)
    The Tanzania–Zambia Railway (TAZARA) is a major bi-national rail line built with Chinese assistance that links landlocked Zambia to the Tanzanian port of Dar es Salaam, serving as a key transport and trade corridor in East and Southern Africa.
  • D. Cairo–Port Said line
    The Cairo–Port Said line is a major Egyptian railway route linking the capital Cairo with the Mediterranean port city of Port Said, serving as a key axis for passenger and freight transport in the Nile Delta.
  • E. Tabora–Mpanda railway
    The Tabora–Mpanda railway is a regional rail line in western Tanzania that connects the town of Tabora with Mpanda, supporting transport and economic activity across the area.
  • 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_69a88b0a9f248190bcff941463d8f65a completed March 4, 2026, 7:42 p.m.
NER Named-entity recognition batch_69abc5edc1348190a4d84606b1310711 completed March 7, 2026, 6:30 a.m.
NED1 Entity disambiguation (via context triple) batch_69ae7f2e338881908e09d19f469a59ce completed March 9, 2026, 8:05 a.m.
NEDg Description generation batch_69ae7fd78ee48190990fc7b5034b662b completed March 9, 2026, 8:07 a.m.
NED2 Entity disambiguation (via description) batch_69ae80dadf208190913211329a40b4ee completed March 9, 2026, 8:12 a.m.
Created at: March 4, 2026, 7:49 p.m.