Triple
T592474
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Alexandria tram |
E17305
|
entity |
| Predicate | operator |
P179
|
FINISHED |
| Object |
Alexandria Passenger Transportation Authority
The Alexandria Passenger Transportation Authority is the public agency responsible for managing and operating urban passenger transport services, including the historic tram network, in Alexandria, Egypt.
|
E17305
|
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: Alexandria Passenger Transportation Authority | Statement: [Alexandria tram, operator, Alexandria Passenger Transportation Authority]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Alexandria Passenger Transportation Authority Context triple: [Alexandria tram, operator, Alexandria Passenger Transportation Authority]
-
A.
Maryland Transit Administration
The Maryland Transit Administration is the state agency responsible for operating and overseeing public transportation services in Maryland, including bus, rail, and commuter transit systems.
-
B.
Alexandria tram
The Alexandria tram is one of the oldest operating electric tram systems in the world, serving as a key component of public transportation in the Egyptian coastal city of Alexandria.
-
C.
Fairfax Connector bus system
The Fairfax Connector bus system is a public transit network in Northern Virginia that provides local and commuter bus services throughout Fairfax County and surrounding areas.
-
D.
Metrobus
Metrobus is the public bus transit system serving the Washington, D.C. metropolitan area, operated alongside the Metrorail network by the Washington Metropolitan Area Transit Authority (WMATA).
-
E.
Metropolitan Transit Authority
The Metropolitan Transit Authority was a former public agency that operated and managed mass transit services in the Boston metropolitan area before being succeeded by the MBTA.
- 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: Alexandria Passenger Transportation Authority Triple: [Alexandria tram, operator, Alexandria Passenger Transportation Authority]
Generated description
The Alexandria Passenger Transportation Authority is the public agency responsible for managing and operating urban passenger transport services, including the historic tram network, in Alexandria, Egypt.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Alexandria Passenger Transportation Authority Target entity description: The Alexandria Passenger Transportation Authority is the public agency responsible for managing and operating urban passenger transport services, including the historic tram network, in Alexandria, Egypt.
-
A.
Maryland Transit Administration
The Maryland Transit Administration is the state agency responsible for operating and overseeing public transportation services in Maryland, including bus, rail, and commuter transit systems.
-
B.
Alexandria tram
chosen
The Alexandria tram is one of the oldest operating electric tram systems in the world, serving as a key component of public transportation in the Egyptian coastal city of Alexandria.
-
C.
Fairfax Connector bus system
The Fairfax Connector bus system is a public transit network in Northern Virginia that provides local and commuter bus services throughout Fairfax County and surrounding areas.
-
D.
Metrobus
Metrobus is the public bus transit system serving the Washington, D.C. metropolitan area, operated alongside the Metrorail network by the Washington Metropolitan Area Transit Authority (WMATA).
-
E.
Metropolitan Transit Authority
The Metropolitan Transit Authority was a former public agency that operated and managed mass transit services in the Boston metropolitan area before being succeeded by the MBTA.
- F. None of above.
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_69a49379d09c8190ac7e00b24e2810b1 |
completed | March 1, 2026, 7:28 p.m. |
| NER | Named-entity recognition | batch_69a49bbcaf5c81908de4e27096d3da13 |
completed | March 1, 2026, 8:04 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a51554857481909c684b86b51aa126 |
completed | March 2, 2026, 4:43 a.m. |
| NEDg | Description generation | batch_69a5163b240881909672bf4bc2ebe9cf |
completed | March 2, 2026, 4:46 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a516a1e6508190a7ecb801f5080ddd |
completed | March 2, 2026, 4:48 a.m. |
Created at: March 1, 2026, 7:33 p.m.