San Rafael Reef
E595488
San Rafael Reef is a dramatic, jagged sandstone escarpment in central Utah known for its steep cliffs, slot canyons, and striking geologic formations along the eastern edge of the San Rafael Swell.
All labels observed (1)
| Label | Occurrences |
|---|---|
| San Rafael Reef canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6493209 — 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: San Rafael Reef Context triple: [San Rafael Swell, contains, San Rafael Reef]
-
A.
Marion Reef
Marion Reef is a large coral reef formation in the Coral Sea off the coast of northeastern Australia, known for its rich marine biodiversity and remote location.
-
B.
Bird Rock reef
Bird Rock reef is a marine reef formation located off Bird Rock that is known for its rich coastal ecology and underwater habitats.
-
C.
Duxbury Reef
Duxbury Reef is a large rocky intertidal reef and marine protected area off the coast of Marin County, California, known for its rich tidepool ecosystems and coastal biodiversity.
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D.
Cato Reef
Cato Reef is a remote coral reef and atoll in the Coral Sea known for its rich marine biodiversity and relatively undisturbed ecosystems.
-
E.
Middleton Reef
Middleton Reef is a remote coral reef and atoll in the Tasman Sea, known as one of the southernmost true coral reefs in the world and part of Australia’s offshore marine reserves.
- 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: San Rafael Reef Target entity description: San Rafael Reef is a dramatic, jagged sandstone escarpment in central Utah known for its steep cliffs, slot canyons, and striking geologic formations along the eastern edge of the San Rafael Swell.
-
A.
Marion Reef
Marion Reef is a large coral reef formation in the Coral Sea off the coast of northeastern Australia, known for its rich marine biodiversity and remote location.
-
B.
Bird Rock reef
Bird Rock reef is a marine reef formation located off Bird Rock that is known for its rich coastal ecology and underwater habitats.
-
C.
Duxbury Reef
Duxbury Reef is a large rocky intertidal reef and marine protected area off the coast of Marin County, California, known for its rich tidepool ecosystems and coastal biodiversity.
-
D.
Cato Reef
Cato Reef is a remote coral reef and atoll in the Coral Sea known for its rich marine biodiversity and relatively undisturbed ecosystems.
-
E.
Middleton Reef
Middleton Reef is a remote coral reef and atoll in the Tasman Sea, known as one of the southernmost true coral reefs in the world and part of Australia’s offshore marine reserves.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
escarpment
ⓘ
geologic formation ⓘ |
| contains |
Bell Canyon
NERFINISHED
ⓘ
Chute Canyon NERFINISHED ⓘ Crack Canyon NERFINISHED ⓘ Little Wild Horse Canyon NERFINISHED ⓘ Wild Horse Canyon NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| drainage | tributaries of the San Rafael River ⓘ |
| erosionProcess |
water erosion
ⓘ
wind erosion ⓘ |
| formedBy | Laramide orogeny-related uplift and folding ⓘ |
| forms | eastern edge of the San Rafael Swell ⓘ |
| geologicAge |
Jurassic
ⓘ
Mesozoic NERFINISHED ⓘ |
| geologicalComposition | sandstone ⓘ |
| hasAccessPoint |
San Rafael Reef exit on Interstate 70
ⓘ
Temple Mountain Road NERFINISHED ⓘ |
| hasGeologicalFeature |
erosional landforms
ⓘ
monocline ⓘ tilted rock layers ⓘ |
| hasLandform |
arches
ⓘ
buttes ⓘ canyons ⓘ fins ⓘ mesas ⓘ |
| hasOrientation | north-south trending ⓘ |
| hasViewOf | San Rafael Swell NERFINISHED ⓘ |
| locatedIn |
Emery County, Utah
NERFINISHED
ⓘ
Utah ⓘ central Utah NERFINISHED ⓘ |
| near | Interstate 70 in Utah NERFINISHED ⓘ |
| notableFor |
dramatic scenery
ⓘ
jagged ridges ⓘ slot canyons ⓘ steep cliffs ⓘ striking geologic formations ⓘ |
| partOf | San Rafael Swell NERFINISHED ⓘ |
| protectedBy | Bureau of Land Management NERFINISHED ⓘ |
| rockType |
Kayenta Formation
NERFINISHED
ⓘ
Navajo Sandstone NERFINISHED ⓘ Wingate Sandstone NERFINISHED ⓘ |
| usedFor |
backpacking
ⓘ
canyoneering ⓘ hiking ⓘ photography ⓘ rock climbing ⓘ |
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: San Rafael Reef Description of subject: San Rafael Reef is a dramatic, jagged sandstone escarpment in central Utah known for its steep cliffs, slot canyons, and striking geologic formations along the eastern edge of the San Rafael Swell.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.