Triple
T14890174
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Silver Line at South Station |
E359734
|
entity |
| Predicate | servesLine |
P839
|
FINISHED |
| Object |
Silver Line SLW
Silver Line SLW is a branch of Boston’s MBTA Silver Line bus rapid transit service that operates through South Station and connects it with other key destinations.
|
E1129708
|
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: Silver Line SLW | Statement: [MBTA Silver Line at South Station, servesLine, Silver Line SLW]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Silver Line SLW Context triple: [MBTA Silver Line at South Station, servesLine, Silver Line SLW]
-
A.
Silver Line SL3
Silver Line SL3 is a Boston-area MBTA bus rapid transit route that operates as part of the Silver Line network, connecting key neighborhoods and transit hubs in and around the city.
-
B.
Silver Line SL1
Silver Line SL1 is a Boston bus rapid transit route connecting Logan International Airport with South Station via the South Boston waterfront.
-
C.
Silver Line SL2
Silver Line SL2 is a Boston MBTA bus rapid transit route that connects South Station with the Seaport District and Boston Marine Industrial Park via the South Boston Transitway.
-
D.
Silver Line SL4
Silver Line SL4 is a bus rapid transit route in Boston that operates as part of the MBTA Silver Line, connecting downtown with neighborhoods along Washington Street.
-
E.
Silver Line SL5
Silver Line SL5 is a bus rapid transit route in Boston that operates as part of the MBTA Silver Line, connecting downtown with neighborhoods along Washington Street.
- 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: Silver Line SLW Triple: [MBTA Silver Line at South Station, servesLine, Silver Line SLW]
Generated description
Silver Line SLW is a branch of Boston’s MBTA Silver Line bus rapid transit service that operates through South Station and connects it with other key destinations.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Silver Line SLW Target entity description: Silver Line SLW is a branch of Boston’s MBTA Silver Line bus rapid transit service that operates through South Station and connects it with other key destinations.
-
A.
Silver Line SL3
Silver Line SL3 is a Boston-area MBTA bus rapid transit route that operates as part of the Silver Line network, connecting key neighborhoods and transit hubs in and around the city.
-
B.
Silver Line SL1
Silver Line SL1 is a Boston bus rapid transit route connecting Logan International Airport with South Station via the South Boston waterfront.
-
C.
Silver Line SL2
Silver Line SL2 is a Boston MBTA bus rapid transit route that connects South Station with the Seaport District and Boston Marine Industrial Park via the South Boston Transitway.
-
D.
Silver Line SL4
Silver Line SL4 is a bus rapid transit route in Boston that operates as part of the MBTA Silver Line, connecting downtown with neighborhoods along Washington Street.
-
E.
Silver Line SL5
Silver Line SL5 is a bus rapid transit route in Boston that operates as part of the MBTA Silver Line, connecting downtown with neighborhoods along Washington Street.
- 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_69d827980cbc8190a0c569ae3940a1d9 |
completed | April 9, 2026, 10:26 p.m. |
| NER | Named-entity recognition | batch_69ded5f6cf5c8190b6b28f58fafe5d59 |
completed | April 15, 2026, 12:04 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fe8bccc26c8190bf571ea7aee0e0f6 |
completed | May 9, 2026, 1:20 a.m. |
| NEDg | Description generation | batch_69fe8f0c0f848190b83dd19470c1fa27 |
completed | May 9, 2026, 1:34 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69fe8f71f0648190b419ff16a853d15b |
completed | May 9, 2026, 1:35 a.m. |
Created at: April 10, 2026, 2:09 a.m.