Triple
T22699490
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Walkerton, Ontario |
E561275
|
entity |
| Predicate | hasEvent |
P811
|
FINISHED |
| Object |
Walkerton E. coli outbreak
The Walkerton E. coli outbreak was a deadly 2000 public health crisis in Walkerton, Ontario, caused by contamination of the town’s drinking water supply with E. coli O157:H7, leading to multiple deaths, thousands of illnesses, and major reforms to water safety regulations in Canada.
|
E1549805
|
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: Walkerton E. coli outbreak | Statement: [Walkerton, Ontario, hasEvent, Walkerton E. coli outbreak]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Walkerton E. coli outbreak Context triple: [Walkerton, Ontario, hasEvent, Walkerton E. coli outbreak]
-
A.
1993 Jack in the Box E. coli outbreak
The 1993 Jack in the Box E. coli outbreak was a major foodborne illness crisis in the United States that sickened hundreds, killed four children, and led to sweeping reforms in food safety regulations and fast-food industry practices.
-
B.
Centre for Waterborne Diseases
The Centre for Waterborne Diseases is a specialized unit within Norway’s public health system that focuses on research, surveillance, and prevention of illnesses transmitted through water.
-
C.
BioWatch program
The BioWatch program is a U.S. national biosurveillance system designed to detect the airborne release of biological agents as early as possible to help prevent or mitigate bioterrorism attacks.
-
D.
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.
-
E.
Woburn toxic waste contamination cases
The Woburn toxic waste contamination cases were a series of high-profile environmental and legal battles in the late 20th century involving industrial pollution of the town’s water supply and a cluster of childhood leukemia cases, later chronicled in the book and film "A Civil Action."
- 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: Walkerton E. coli outbreak Triple: [Walkerton, Ontario, hasEvent, Walkerton E. coli outbreak]
Generated description
The Walkerton E. coli outbreak was a deadly 2000 public health crisis in Walkerton, Ontario, caused by contamination of the town’s drinking water supply with E. coli O157:H7, leading to multiple deaths, thousands of illnesses, and major reforms to water safety regulations in Canada.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Walkerton E. coli outbreak Target entity description: The Walkerton E. coli outbreak was a deadly 2000 public health crisis in Walkerton, Ontario, caused by contamination of the town’s drinking water supply with E. coli O157:H7, leading to multiple deaths, thousands of illnesses, and major reforms to water safety regulations in Canada.
-
A.
1993 Jack in the Box E. coli outbreak
The 1993 Jack in the Box E. coli outbreak was a major foodborne illness crisis in the United States that sickened hundreds, killed four children, and led to sweeping reforms in food safety regulations and fast-food industry practices.
-
B.
Centre for Waterborne Diseases
The Centre for Waterborne Diseases is a specialized unit within Norway’s public health system that focuses on research, surveillance, and prevention of illnesses transmitted through water.
-
C.
BioWatch program
The BioWatch program is a U.S. national biosurveillance system designed to detect the airborne release of biological agents as early as possible to help prevent or mitigate bioterrorism attacks.
-
D.
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.
-
E.
Woburn toxic waste contamination cases
The Woburn toxic waste contamination cases were a series of high-profile environmental and legal battles in the late 20th century involving industrial pollution of the town’s water supply and a cluster of childhood leukemia cases, later chronicled in the book and film "A Civil Action."
- 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_69e2454e615481909c177440be559d2c |
completed | April 17, 2026, 2:35 p.m. |
| NER | Named-entity recognition | batch_69f178c944748190a0712983f7059114 |
completed | April 29, 2026, 3:19 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a0b7ed1f220819084322d245405829f |
completed | May 18, 2026, 9:04 p.m. |
| NEDg | Description generation | batch_6a0b7f823bc481909b646fdc338fdbb7 |
completed | May 18, 2026, 9:07 p.m. |
| NED2 | Entity disambiguation (via description) | batch_6a0b8054938c8190a1e873fa6ef00a8b |
completed | May 18, 2026, 9:10 p.m. |
Created at: April 17, 2026, 3:15 p.m.