Triple

T9656246
Position Surface form Disambiguated ID Type / Status
Subject William L. Pereira & Associates E233458 entity
Predicate designed P184 FINISHED
Object Metropolitan Water District Building (Los Angeles)
The Metropolitan Water District Building in Los Angeles is a modernist office complex notable for its sleek, futuristic design by the influential mid-20th-century architecture firm William L. Pereira & Associates.
E813509 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: Metropolitan Water District Building (Los Angeles) | Statement: [William L. Pereira & Associates, designed, Metropolitan Water District Building (Los Angeles)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Metropolitan Water District Building (Los Angeles)
Context triple: [William L. Pereira & Associates, designed, Metropolitan Water District Building (Los Angeles)]
  • A. Los Angeles Department of Water and Power Building
    The Los Angeles Department of Water and Power Building is a prominent Modernist high-rise office tower in downtown Los Angeles, known for its distinctive glass-and-concrete design and reflecting pools.
  • B. Southern California Edison Company Building (Los Angeles)
    The Southern California Edison Company Building in Los Angeles is a historic early-20th-century office building known for its distinctive architecture and association with the growth of the region’s electric power industry.
  • C. Los Angeles County Hall of Administration
    The Los Angeles County Hall of Administration is a major government building in downtown Los Angeles that houses the offices and meeting chambers of the Los Angeles County Board of Supervisors and key county administrative departments.
  • D. Los Angeles Board of Education Building
    The Los Angeles Board of Education Building is a historic civic structure in Los Angeles designed by prominent architect John C. Austin, known for its role in housing the city's educational administration.
  • E. Los Angeles Chamber of Commerce Building
    The Los Angeles Chamber of Commerce Building is a historic early 20th-century commercial landmark in downtown Los Angeles, designed in a Beaux-Arts/Neoclassical style that reflects the city’s growth as a major economic center.
  • 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: Metropolitan Water District Building (Los Angeles)
Triple: [William L. Pereira & Associates, designed, Metropolitan Water District Building (Los Angeles)]
Generated description
The Metropolitan Water District Building in Los Angeles is a modernist office complex notable for its sleek, futuristic design by the influential mid-20th-century architecture firm William L. Pereira & Associates.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Metropolitan Water District Building (Los Angeles)
Target entity description: The Metropolitan Water District Building in Los Angeles is a modernist office complex notable for its sleek, futuristic design by the influential mid-20th-century architecture firm William L. Pereira & Associates.
  • A. Los Angeles Department of Water and Power Building
    The Los Angeles Department of Water and Power Building is a prominent Modernist high-rise office tower in downtown Los Angeles, known for its distinctive glass-and-concrete design and reflecting pools.
  • B. Southern California Edison Company Building (Los Angeles)
    The Southern California Edison Company Building in Los Angeles is a historic early-20th-century office building known for its distinctive architecture and association with the growth of the region’s electric power industry.
  • C. Los Angeles County Hall of Administration
    The Los Angeles County Hall of Administration is a major government building in downtown Los Angeles that houses the offices and meeting chambers of the Los Angeles County Board of Supervisors and key county administrative departments.
  • D. Los Angeles Board of Education Building
    The Los Angeles Board of Education Building is a historic civic structure in Los Angeles designed by prominent architect John C. Austin, known for its role in housing the city's educational administration.
  • E. Los Angeles Chamber of Commerce Building
    The Los Angeles Chamber of Commerce Building is a historic early 20th-century commercial landmark in downtown Los Angeles, designed in a Beaux-Arts/Neoclassical style that reflects the city’s growth as a major economic center.
  • 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_69ca848c1ba88190b84b410cd14627fc completed March 30, 2026, 2:11 p.m.
NER Named-entity recognition batch_69cd9bdd5c0c8190a6c82a1609454d1b completed April 1, 2026, 10:27 p.m.
NED1 Entity disambiguation (via context triple) batch_69d18a07444c819099d7462c38f6da49 completed April 4, 2026, 10 p.m.
NEDg Description generation batch_69d18a7f4074819086316d0236f09e0b completed April 4, 2026, 10:02 p.m.
NED2 Entity disambiguation (via description) batch_69d18af220808190b91eb750f2939e4e completed April 4, 2026, 10:04 p.m.
Created at: March 30, 2026, 8:14 p.m.