Triple
T1663428
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA bus route 28 |
E35958
|
entity |
| Predicate | hasOperatorAbbreviation |
P7409
|
FINISHED |
| Object | MBTA |
E2866
|
NE FINISHED |
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: MBTA | Statement: [MBTA bus route 28, hasOperatorAbbreviation, MBTA]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA Context triple: [MBTA bus route 28, hasOperatorAbbreviation, MBTA]
-
A.
MBTA
chosen
The MBTA (Massachusetts Bay Transportation Authority) is the public transit agency that operates subway, bus, commuter rail, and ferry services in the Greater Boston area.
-
B.
MBTA
MBTA is a landmark U.S. federal law enacted in 1918 that protects migratory bird species by prohibiting their unauthorized capture, killing, or trade.
-
C.
MBTA Commuter Rail network
The MBTA Commuter Rail network is a regional passenger rail system serving Greater Boston and surrounding communities in Massachusetts and parts of Rhode Island.
-
D.
MBTA AFC 2.0
MBTA AFC 2.0 is the Massachusetts Bay Transportation Authority’s next-generation automated fare collection system designed to modernize how riders pay for and access public transit across Greater Boston.
-
E.
MBTA Silver Line
The MBTA Silver Line is a bus rapid transit service in Boston that operates in dedicated lanes and tunnels, linking key neighborhoods, Logan Airport, and South Station.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: hasOperatorAbbreviation Context triple: [MBTA bus route 28, hasOperatorAbbreviation, MBTA]
-
A.
hasNameAbbreviation
Indicates that an entity is associated with a shortened or abbreviated form of its full name.
-
B.
hasAbbreviationForRegion
Indicates that one entity is used as the standard abbreviated form of the name of a particular region.
-
C.
governsOrganizationAbbreviation
Indicates that one entity has authoritative control or oversight over the use or assignment of an abbreviation that represents an organization.
-
D.
typicalOperatorType
Indicates the usual or most common type or category of operator associated with a given entity or context.
-
E.
worksWithAbbreviation
chosen
Indicates that one entity uses or is associated with a specific abbreviated form of another entity’s name or designation.
- F. None of above.
Provenance (4 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_69a88606aa808190aa0b421b4271f220 |
completed | March 4, 2026, 7:20 p.m. |
| NER | Named-entity recognition | batch_69aa994f92b0819084ee2f6a672334b9 |
completed | March 6, 2026, 9:07 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b12dd43d248190b5918548c1b37a4e |
completed | March 11, 2026, 8:54 a.m. |
| PD | Predicate disambiguation | batch_69a907d2475c8190b7ec7dccd3335eb1 |
completed | March 5, 2026, 4:34 a.m. |
Created at: March 4, 2026, 7:29 p.m.