Triple
T9180206
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Lake Merced |
E220303
|
entity |
| Predicate | isPartOf |
P10
|
FINISHED |
| Object | San Francisco Public Utilities Commission watershed system |
E584942
|
NE FINISHED |
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: San Francisco Public Utilities Commission watershed system | Statement: [Lake Merced, isPartOf, San Francisco Public Utilities Commission watershed system]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: San Francisco Public Utilities Commission watershed system Context triple: [Lake Merced, isPartOf, San Francisco Public Utilities Commission watershed system]
-
A.
San Francisco Peninsula reservoir system
The San Francisco Peninsula reservoir system is a network of man-made lakes and related infrastructure that stores and supplies drinking water to the San Francisco Bay Area, particularly the city of San Francisco and nearby communities.
-
B.
Solano County Water Agency
Solano County Water Agency is a public water management agency in California responsible for regional water supply, flood control, and environmental stewardship in Solano County.
-
C.
Sacramento River watershed infrastructure
Sacramento River watershed infrastructure comprises the network of dams, reservoirs, levees, canals, and related facilities that manage water supply, flood control, and ecosystem conditions throughout the Sacramento River basin in Northern California.
-
D.
San Francisco Peninsula watershed
chosen
The San Francisco Peninsula watershed is the network of creeks, reservoirs, and drainage basins that collect and channel water across the San Francisco Peninsula into the Pacific Ocean and San Francisco Bay.
-
E.
Contra Costa Water District
Contra Costa Water District is a public water agency in California that supplies drinking and irrigation water to communities in and around Contra Costa County.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69ca83e589948190ac9907819db11ddf |
completed | March 30, 2026, 2:08 p.m. |
| NER | Named-entity recognition | batch_69ccc251da448190a5c7f684dac15a84 |
completed | April 1, 2026, 6:59 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d054b5512c8190aa7909ef8b56b186 |
completed | April 4, 2026, midnight |
Created at: March 30, 2026, 7:23 p.m.