Triple

T507678
Position Surface form Disambiguated ID Type / Status
Subject Gulf of Mexico E10536 entity
Predicate notableEvent P259 FINISHED
Object Deepwater Horizon oil spill
The Deepwater Horizon oil spill was a massive 2010 offshore drilling disaster that released millions of barrels of oil into the Gulf of Mexico, causing one of the worst environmental catastrophes in U.S. history.
E63331 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: Deepwater Horizon oil spill | Statement: [Gulf of Mexico, notableEvent, Deepwater Horizon oil spill]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Deepwater Horizon oil spill
Context triple: [Gulf of Mexico, notableEvent, Deepwater Horizon oil spill]
  • A. Fukushima Daiichi nuclear disaster
    The Fukushima Daiichi nuclear disaster was a 2011 catastrophic failure at a Japanese nuclear power plant triggered by a massive earthquake and tsunami, leading to core meltdowns, radioactive releases, and long-term environmental and policy impacts worldwide.
  • B. Hurricane Katrina
    Hurricane Katrina was a catastrophic 2005 Atlantic hurricane that caused widespread devastation along the U.S. Gulf Coast, particularly in New Orleans, due to extreme flooding and levee failures.
  • C. Katrina
    Katrina is a feminine given name of Dutch origin, notably borne by the character Katrina Van Tassel in Washington Irving’s "The Legend of Sleepy Hollow."
  • D. Hillsborough disaster
    The Hillsborough disaster was a 1989 human crush tragedy at an FA Cup semi-final in Sheffield that killed 97 Liverpool supporters and led to major reforms in English football stadium safety and policing.
  • E. Imo Incident
    The Imo Incident was an 1882 mutiny of Korean soldiers in Seoul that escalated into violent unrest and foreign intervention, highlighting Korea’s internal instability and vulnerability to outside powers.
  • 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: Deepwater Horizon oil spill
Triple: [Gulf of Mexico, notableEvent, Deepwater Horizon oil spill]
Generated description
The Deepwater Horizon oil spill was a massive 2010 offshore drilling disaster that released millions of barrels of oil into the Gulf of Mexico, causing one of the worst environmental catastrophes in U.S. history.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Deepwater Horizon oil spill
Target entity description: The Deepwater Horizon oil spill was a massive 2010 offshore drilling disaster that released millions of barrels of oil into the Gulf of Mexico, causing one of the worst environmental catastrophes in U.S. history.
  • A. Oil Spill Liability Trust Fund
    The Oil Spill Liability Trust Fund is a U.S. federal fund that provides money for oil spill cleanup and damages when responsible parties cannot or do not pay.
  • B. Fukushima Daiichi nuclear disaster
    The Fukushima Daiichi nuclear disaster was a 2011 catastrophic failure at a Japanese nuclear power plant triggered by a massive earthquake and tsunami, leading to core meltdowns, radioactive releases, and long-term environmental and policy impacts worldwide.
  • C. Hurricane Katrina
    Hurricane Katrina was a catastrophic 2005 Atlantic hurricane that caused widespread devastation along the U.S. Gulf Coast, particularly in New Orleans, due to extreme flooding and levee failures.
  • D. Oil Pollution Act
    The Oil Pollution Act is a U.S. federal law that strengthens regulations and liability for oil spill prevention, response, and cleanup in American waters and shorelines.
  • E. Flint water crisis
    The Flint water crisis was a public health disaster in Flint, Michigan, where cost-cutting measures led to lead-contaminated drinking water and widespread exposure, prompting national outrage and reforms in water safety oversight.
  • 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_69a2e848adf881908e5e04f7af030093 completed Feb. 28, 2026, 1:06 p.m.
NER Named-entity recognition batch_69a2f14dcd688190ad47a3b31b95b6d4 completed Feb. 28, 2026, 1:44 p.m.
NED1 Entity disambiguation (via context triple) batch_69a498506418819090190a35e8763982 completed March 1, 2026, 7:49 p.m.
NEDg Description generation batch_69a499da231c8190abd973d9ac3969ff completed March 1, 2026, 7:56 p.m.
NED2 Entity disambiguation (via description) batch_69a49b0045b481908f5e863d61b7e17e completed March 1, 2026, 8:01 p.m.
Created at: Feb. 28, 2026, 1:12 p.m.