Triple
T23095681
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA commuter rail at Back Bay |
E575880
|
entity |
| Predicate | railLine |
P848
|
FINISHED |
| Object | Needham Line |
—
|
NE NERFINISHED |
How this triple was built (2 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: Needham Line | Statement: [MBTA commuter rail at Back Bay, railLine, Needham Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Needham Line Context triple: [MBTA commuter rail at Back Bay, railLine, Needham Line]
-
A.
Needham Line
chosen
The Needham Line is a Massachusetts Bay Transportation Authority commuter rail route serving Boston and its southwestern suburbs, terminating in the town of Needham.
-
B.
Hauenstein line
The Hauenstein line is a major Swiss railway route crossing the Jura Mountains, historically important as a key north–south connection between Basel and central Switzerland.
-
C.
Winter Line
The Winter Line was a series of German defensive fortifications in southern Italy during World War II, designed to delay the Allied advance toward Rome.
-
D.
Ceasefire Line
The Ceasefire Line is the demarcation line in Cyprus that separates the Greek Cypriot–controlled south from the Turkish Cypriot–controlled north, monitored by the United Nations as a buffer zone.
-
E.
Dyle Line
The Dyle Line was a key Belgian defensive position along the Dyle River that formed the centerpiece of Allied plans to halt the German advance during the 1940 campaign in Western Europe.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
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_69e245c060b48190a9bd61a47a16db17 |
completed | April 17, 2026, 2:37 p.m. |
| NER | Named-entity recognition | batch_69f18de3b2b481909ef598b447ed4dd2 |
completed | April 29, 2026, 4:49 a.m. |
Created at: April 17, 2026, 3:57 p.m.