Triple
T14077580
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Washington Street Elevated |
E338777
|
entity |
| Predicate | ownerAfter1964 |
P112728
|
FINISHED |
| Object | Massachusetts Bay Transportation Authority |
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: Massachusetts Bay Transportation Authority | Statement: [Washington Street Elevated, ownerAfter1964, Massachusetts Bay Transportation Authority]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Massachusetts Bay Transportation Authority Context triple: [Washington Street Elevated, ownerAfter1964, Massachusetts Bay Transportation Authority]
-
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.
Massachusetts Bay Transportation Trust Fund
The Massachusetts Bay Transportation Trust Fund is a dedicated financial resource used to support and sustain public transportation services in Massachusetts.
-
D.
MetroWest Regional Transit Authority
MetroWest Regional Transit Authority is a public transportation agency that operates local bus and paratransit services in the MetroWest region of Massachusetts.
-
E.
Cape Cod Regional Transit Authority
The Cape Cod Regional Transit Authority is a public transportation agency that operates bus and paratransit services throughout Cape Cod, Massachusetts.
- 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: ownerAfter1964 Context triple: [Washington Street Elevated, ownerAfter1964, Massachusetts Bay Transportation Authority]
-
A.
ownershipAfter1976
Indicates that one entity holds ownership of another entity starting from a point in time after the year 1976.
-
B.
capitalAfter1954
Indicates that an entity became the capital of a place after the year 1954.
-
C.
statusAfter1966
Indicates the status or condition of an entity as it existed at some point after the year 1966.
-
D.
capitalAfter1910
Indicates that one entity served as the capital of the other at some point after the year 1910.
-
E.
reputationBefore1969
Indicates that one entity had a particular reputation or standing in relation to another entity prior to the year 1969.
- 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_69d81c687b0c819087fd9ed4198403f8 |
completed | April 9, 2026, 9:38 p.m. |
| NER | Named-entity recognition | batch_69de5c5cdd288190914e1d57321b3554 |
completed | April 14, 2026, 3:25 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fcb670f51c819088e8d0137f8d3bb1 |
completed | May 7, 2026, 3:57 p.m. |
| PD | Predicate disambiguation | batch_69de05b0e6c88190a819eeba0028981f |
completed | April 14, 2026, 9:15 a.m. |
| PDg | Predicate description generation | batch_69de2398856c81908bed6070e4ca6ab1 |
completed | April 14, 2026, 11:23 a.m. |
Created at: April 9, 2026, 10:21 p.m.