Triple

T11486890
Position Surface form Disambiguated ID Type / Status
Subject Ellicott City E272302 entity
Predicate hasNotableEvent P259 FINISHED
Object 2018 Ellicott City flood
The 2018 Ellicott City flood was a catastrophic flash flooding event in Ellicott City, Maryland, that caused severe damage to the historic downtown area and followed a similarly devastating flood there in 2016.
E929671 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: 2018 Ellicott City flood | Statement: [Ellicott City, hasNotableEvent, 2018 Ellicott City flood]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: 2018 Ellicott City flood
Context triple: [Ellicott City, hasNotableEvent, 2018 Ellicott City flood]
  • A. 2016 Ellicott City flood
    The 2016 Ellicott City flood was a devastating flash flood in Ellicott City, Maryland, caused by torrential rainfall that led to severe damage to the historic downtown area and multiple fatalities.
  • B. Hartford Flood of 1936
    The Hartford Flood of 1936 was a devastating spring flood that inundated Hartford, Connecticut and surrounding areas, causing widespread damage and prompting major flood-control improvements along the city’s rivers.
  • C. Great Johnstown Flood of 1889
    The Great Johnstown Flood of 1889 was a catastrophic dam failure–induced deluge that devastated Johnstown, Pennsylvania, killing more than 2,200 people and becoming one of the deadliest and most infamous disasters in U.S. history.
  • D. Great Flood of 1879
    The Great Flood of 1879 was a catastrophic inundation of the city of Szeged in Hungary that destroyed most of the town and prompted a major reconstruction.
  • E. The Great Flood of 1852
    The Great Flood of 1852 was a catastrophic inundation of the Murrumbidgee River that devastated the Australian town of Gundagai, causing extensive loss of life and prompting the town’s relocation to higher ground.
  • 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: 2018 Ellicott City flood
Triple: [Ellicott City, hasNotableEvent, 2018 Ellicott City flood]
Generated description
The 2018 Ellicott City flood was a catastrophic flash flooding event in Ellicott City, Maryland, that caused severe damage to the historic downtown area and followed a similarly devastating flood there in 2016.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: 2018 Ellicott City flood
Target entity description: The 2018 Ellicott City flood was a catastrophic flash flooding event in Ellicott City, Maryland, that caused severe damage to the historic downtown area and followed a similarly devastating flood there in 2016.
  • A. 2016 Ellicott City flood
    The 2016 Ellicott City flood was a devastating flash flood in Ellicott City, Maryland, caused by torrential rainfall that led to severe damage to the historic downtown area and multiple fatalities.
  • B. Hartford Flood of 1936
    The Hartford Flood of 1936 was a devastating spring flood that inundated Hartford, Connecticut and surrounding areas, causing widespread damage and prompting major flood-control improvements along the city’s rivers.
  • C. Great Johnstown Flood of 1889
    The Great Johnstown Flood of 1889 was a catastrophic dam failure–induced deluge that devastated Johnstown, Pennsylvania, killing more than 2,200 people and becoming one of the deadliest and most infamous disasters in U.S. history.
  • D. Great Flood of 1879
    The Great Flood of 1879 was a catastrophic inundation of the city of Szeged in Hungary that destroyed most of the town and prompted a major reconstruction.
  • E. The Great Flood of 1852
    The Great Flood of 1852 was a catastrophic inundation of the Murrumbidgee River that devastated the Australian town of Gundagai, causing extensive loss of life and prompting the town’s relocation to higher ground.
  • 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_69d6aae1b09881909ce2ded3fa0c14fa completed April 8, 2026, 7:22 p.m.
NER Named-entity recognition batch_69d85a1fc9688190aacc2eed64229b79 completed April 10, 2026, 2:02 a.m.
NED1 Entity disambiguation (via context triple) batch_69e624b12c04819085cc5f7dd64283ca completed April 20, 2026, 1:05 p.m.
NEDg Description generation batch_69e62cf224f881908badcdab6aea1aef completed April 20, 2026, 1:41 p.m.
NED2 Entity disambiguation (via description) batch_69e663ffedfc8190a2b51995c62d1e6b completed April 20, 2026, 5:36 p.m.
Created at: April 8, 2026, 9:36 p.m.