Triple

T22215144

Position	Surface form	Disambiguated ID	Type / Status
Subject	Kelani Valley Line	`E549055`	entity
Predicate	hasIntermediateStation	`P24280`	FINISHED
Object	Homagama railway station	`—`	NE NERFINISHED

How this triple was built (3 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: Homagama railway station | Statement: [Kelani Valley Line, hasIntermediateStation, Homagama railway station]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Homagama railway station
Context triple: [Kelani Valley Line, hasIntermediateStation, Homagama railway station]

A. Aluthgama railway station
Aluthgama railway station is a coastal train station in Sri Lanka serving the town of Aluthgama on the busy southern rail corridor.
B. Gampola railway station
Gampola railway station is a train station in Sri Lanka’s Central Province that serves the town of Gampola on the country’s Main Line.
C. Ambalangoda railway station
Ambalangoda railway station is a train station in the coastal town of Ambalangoda in southern Sri Lanka, serving as a stop on the country’s coastal railway line.
D. Weligama railway station
Weligama railway station is a coastal train stop in southern Sri Lanka serving the town of Weligama on the country’s main southern rail corridor.
E. Maradana railway station
Maradana railway station is a major railway hub in Colombo, Sri Lanka, serving as one of the city’s primary junctions connecting multiple key lines across the country.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Homagama railway station
Target entity description: Homagama railway station is a local passenger rail stop in Homagama, Sri Lanka, serving communities along the narrow-gauge Kelani Valley Line.

A. Aluthgama railway station
Aluthgama railway station is a coastal train station in Sri Lanka serving the town of Aluthgama on the busy southern rail corridor.
B. Gampola railway station
Gampola railway station is a train station in Sri Lanka’s Central Province that serves the town of Gampola on the country’s Main Line.
C. Ambalangoda railway station
Ambalangoda railway station is a train station in the coastal town of Ambalangoda in southern Sri Lanka, serving as a stop on the country’s coastal railway line.
D. Weligama railway station
Weligama railway station is a coastal train stop in southern Sri Lanka serving the town of Weligama on the country’s main southern rail corridor.
E. Maradana railway station
Maradana railway station is a major railway hub in Colombo, Sri Lanka, serving as one of the city’s primary junctions connecting multiple key lines across the country.
F. None of above. chosen

Provenance (2 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_69e11e3f7e04819089806d81d5ac431e`	completed	April 16, 2026, 5:37 p.m.
NER	Named-entity recognition	`batch_69f12b8bdfbc8190832809edbe8b7c27`	completed	April 28, 2026, 9:50 p.m.

Created at: April 16, 2026, 8:37 p.m.