Decorah crater
E112519
Decorah crater is a buried meteorite impact structure located beneath the city of Decorah in northeastern Iowa.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Decorah crater canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T941208 — 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: Decorah crater Context triple: [Decorah, Iowa, feature, Decorah crater]
-
A.
Punchbowl Crater
Punchbowl Crater is an extinct volcanic tuff cone on the island of Oahu, best known as the site of the National Memorial Cemetery of the Pacific.
-
B.
Devil's Punch Bowl
Devil's Punch Bowl is a large natural amphitheater and scenic beauty spot in the Surrey Hills of England, known for its dramatic landscape and walking trails.
-
C.
Jezero Crater
Jezero Crater is an ancient impact basin on Mars that once hosted a lake and river delta, making it a prime site for studying past habitability and searching for signs of ancient life.
-
D.
Garibaldi Lake volcanic field
Garibaldi Lake volcanic field is a volcanic region in southwestern British Columbia, Canada, known for its stratovolcanoes, lava domes, and extensive Pleistocene to Holocene volcanic activity.
-
E.
River Calder
The River Calder is a major river in West Yorkshire, England, flowing through several industrial towns before joining the River Aire.
- 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: Decorah crater Target entity description: Decorah crater is a buried meteorite impact structure located beneath the city of Decorah in northeastern Iowa.
-
A.
Punchbowl Crater
Punchbowl Crater is an extinct volcanic tuff cone on the island of Oahu, best known as the site of the National Memorial Cemetery of the Pacific.
-
B.
Devil's Punch Bowl
Devil's Punch Bowl is a large natural amphitheater and scenic beauty spot in the Surrey Hills of England, known for its dramatic landscape and walking trails.
-
C.
Jezero Crater
Jezero Crater is an ancient impact basin on Mars that once hosted a lake and river delta, making it a prime site for studying past habitability and searching for signs of ancient life.
-
D.
Garibaldi Lake volcanic field
Garibaldi Lake volcanic field is a volcanic region in southwestern British Columbia, Canada, known for its stratovolcanoes, lava domes, and extensive Pleistocene to Holocene volcanic activity.
-
E.
River Calder
The River Calder is a major river in West Yorkshire, England, flowing through several industrial towns before joining the River Aire.
- F. None of above. chosen
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf |
impact crater
ⓘ
meteorite impact structure ⓘ |
| buried | true ⓘ |
| continent | North America ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| coveredBy | Paleozoic sedimentary rocks ⓘ |
| currentExposure | not exposed at the surface ⓘ |
| discoveredBy | geophysical surveys ⓘ |
| discoveredUsing |
aeromagnetic data
ⓘ
gravity data ⓘ seismic reflection data ⓘ |
| discoveryStatus | confirmed impact structure ⓘ |
| estimatedDiameter |
about 3.4 miles
ⓘ
about 5.5 kilometers ⓘ |
| evidenceType |
brecciated rocks
ⓘ
geophysical anomaly ⓘ shocked quartz ⓘ |
| geologicalAge | Ordovician ⓘ |
| hasHazardLevel | no known current impact hazard ⓘ |
| impactOrigin | meteorite ⓘ |
| impactTargetRock | sedimentary rocks ⓘ |
| locatedIn |
Decorah, Iowa
ⓘ
Iowa ⓘ Midwestern United States ⓘ Winneshiek County, Iowa ⓘ northeastern Iowa ⓘ |
| locatedUnder |
city of Decorah
ⓘ
linked to:
Decorah, Iowa
|
| notableFor | being a buried impact structure beneath an inhabited city ⓘ |
| partOf | impact structures of North America ⓘ |
| researchField |
impact cratering studies
ⓘ
planetary geology ⓘ |
| structureType | subsurface impact structure ⓘ |
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: Decorah crater Description of subject: Decorah crater is a buried meteorite impact structure located beneath the city of Decorah in northeastern Iowa.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.