Exxon Valdez
E682975
Exxon Valdez was a U.S. oil tanker infamous for causing one of the worst environmental disasters in history when it spilled millions of gallons of crude oil off the coast of Alaska in 1989.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Exxon Valdez canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7702793 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Exxon Valdez Context triple: [Exxon Valdez oil spill, tanker, Exxon Valdez]
-
A.
M/V Lituya
M/V Lituya is a small Alaska Marine Highway System ferry that primarily serves short-haul routes in Southeast Alaska.
-
B.
M/V Matanuska
M/V Matanuska is a mainline roll-on/roll-off passenger and vehicle ferry serving coastal communities in Alaska as part of the state’s marine highway network.
-
C.
Andrea Gail
The Andrea Gail was a commercial fishing vessel that tragically sank during the 1991 "Perfect Storm" in the North Atlantic, inspiring the book and film of the same name.
-
D.
M/V Columbia
M/V Columbia is a mainline passenger and vehicle ferry that serves as one of the flagship vessels of the Alaska Marine Highway System, operating along coastal routes in Alaska and the Pacific Northwest.
-
E.
M/V Kennicott
M/V Kennicott is a mainline Alaska Marine Highway System ferry that provides passenger, vehicle, and cargo service to coastal communities across Alaska.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Exxon Valdez Target entity description: Exxon Valdez was a U.S. oil tanker infamous for causing one of the worst environmental disasters in history when it spilled millions of gallons of crude oil off the coast of Alaska in 1989.
-
A.
M/V Lituya
M/V Lituya is a small Alaska Marine Highway System ferry that primarily serves short-haul routes in Southeast Alaska.
-
B.
M/V Matanuska
M/V Matanuska is a mainline roll-on/roll-off passenger and vehicle ferry serving coastal communities in Alaska as part of the state’s marine highway network.
-
C.
Andrea Gail
The Andrea Gail was a commercial fishing vessel that tragically sank during the 1991 "Perfect Storm" in the North Atlantic, inspiring the book and film of the same name.
-
D.
M/V Columbia
M/V Columbia is a mainline passenger and vehicle ferry that serves as one of the flagship vessels of the Alaska Marine Highway System, operating along coastal routes in Alaska and the Pacific Northwest.
-
E.
M/V Kennicott
M/V Kennicott is a mainline Alaska Marine Highway System ferry that provides passenger, vehicle, and cargo service to coastal communities across Alaska.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
oil tanker
ⓘ
ship ⓘ |
| beam |
approximately 164 feet
ⓘ
approximately 50 meters ⓘ |
| builtBy | National Steel and Shipbuilding Company NERFINISHED ⓘ |
| causeOfAccident |
failure to properly maneuver around Bligh Reef
ⓘ
grounding due to navigational errors ⓘ |
| countryOfRegistry | United States NERFINISHED ⓘ |
| dateOfAccident | 1989-03-24 ⓘ |
| enteredService | 1986 ⓘ |
| environmentalImpact |
long-term ecological damage to coastal ecosystems
ⓘ
mass mortality of seabirds, marine mammals, and fish ⓘ widespread marine pollution in Prince William Sound ⓘ |
| estimatedSpillVolume |
approximately 11 million gallons
ⓘ
approximately 260000 barrels ⓘ |
| flagAtTimeOfAccident | United States NERFINISHED ⓘ |
| homePortAtTimeOfAccident | San Francisco, California NERFINISHED ⓘ |
| IMONumber | 8414520 ⓘ |
| incident | grounding on Bligh Reef ⓘ |
| laterUse | operated in other regions outside U.S. waters after spill ⓘ |
| launchDate | 1986-12-13 ⓘ |
| ledTo |
Oil Pollution Act of 1990
NERFINISHED
ⓘ
phase-out of many single-hull tankers in U.S. waters ⓘ stricter U.S. regulations on oil tanker operations ⓘ |
| legalConsequence |
civil litigation against Exxon
ⓘ
criminal charges against Exxon Shipping Company ⓘ |
| length |
approximately 301 meters
ⓘ
approximately 987 feet ⓘ |
| locationOfAccident |
Prince William Sound
NERFINISHED
ⓘ
off the coast of Alaska ⓘ |
| maximumSpeed | approximately 16 knots ⓘ |
| notableFor | Exxon Valdez oil spill NERFINISHED ⓘ |
| operator | Exxon Shipping Company NERFINISHED ⓘ |
| ownedBy |
Exxon Corporation
NERFINISHED
ⓘ
ExxonMobil NERFINISHED ⓘ |
| placeBuilt | San Diego, California NERFINISHED ⓘ |
| placeScrapped | Alang, India NERFINISHED ⓘ |
| propulsion | diesel engine ⓘ |
| publicPerception | symbol of large-scale environmental disaster ⓘ |
| renamed |
Dong Fang Ocean
NERFINISHED
ⓘ
Exxon Mediterranean NERFINISHED ⓘ Mediterranean ⓘ Oriental Nicety NERFINISHED ⓘ SeaRiver Mediterranean NERFINISHED ⓘ |
| scrapped | 2012 ⓘ |
| shipType | single-hull oil tanker ⓘ |
| spilledSubstance | crude oil ⓘ |
| tonnage | approximately 214000 deadweight tons ⓘ |
| yearLaunched | 1986 ⓘ |
| yearOfAccident | 1989 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Exxon Valdez Description of subject: Exxon Valdez was a U.S. oil tanker infamous for causing one of the worst environmental disasters in history when it spilled millions of gallons of crude oil off the coast of Alaska in 1989.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.