Agate Fossil Beds National Monument
E107587
Agate Fossil Beds National Monument is a protected area in western Nebraska renowned for its exceptionally rich Miocene-era fossil deposits and preserved prairie landscape.
All labels observed (6)
How this entity was disambiguated
This entity first appeared as the object of triple T856011 — 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: Agate Fossil Beds National Monument Context triple: [Nebraska, hasNationalMonument, Agate Fossil Beds National Monument]
-
A.
Petrified Forest National Park
Petrified Forest National Park is a U.S. national park renowned for its vast deposits of colorful fossilized wood, striking badlands landscapes, and rich paleontological and archaeological resources.
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B.
Devils Tower National Monument
Devils Tower National Monument is a striking igneous rock formation in northeastern Wyoming renowned as a sacred site to Native American tribes and a popular destination for climbers and sightseers.
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C.
Pinnacles National Park
Pinnacles National Park is a rugged U.S. national park known for its dramatic volcanic rock formations, talus caves, and California condor habitat in central California.
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D.
Scotts Bluff National Monument
Scotts Bluff National Monument is a prominent sandstone bluff and historic landmark in western Nebraska that served as a key landmark for pioneers traveling the Oregon, California, and Mormon Trails.
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E.
Hot Creek Geological Site
Hot Creek Geological Site is a geothermal area near Mammoth Lakes in California known for its steaming hot springs, colorful mineral pools, and dramatic volcanic landscape along Hot Creek.
- 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: Agate Fossil Beds National Monument Target entity description: Agate Fossil Beds National Monument is a protected area in western Nebraska renowned for its exceptionally rich Miocene-era fossil deposits and preserved prairie landscape.
-
A.
Petrified Forest National Park
Petrified Forest National Park is a U.S. national park renowned for its vast deposits of colorful fossilized wood, striking badlands landscapes, and rich paleontological and archaeological resources.
-
B.
Devils Tower National Monument
Devils Tower National Monument is a striking igneous rock formation in northeastern Wyoming renowned as a sacred site to Native American tribes and a popular destination for climbers and sightseers.
-
C.
Pinnacles National Park
Pinnacles National Park is a rugged U.S. national park known for its dramatic volcanic rock formations, talus caves, and California condor habitat in central California.
-
D.
Scotts Bluff National Monument
Scotts Bluff National Monument is a prominent sandstone bluff and historic landmark in western Nebraska that served as a key landmark for pioneers traveling the Oregon, California, and Mormon Trails.
-
E.
Hot Creek Geological Site
Hot Creek Geological Site is a geothermal area near Mammoth Lakes in California known for its steaming hot springs, colorful mineral pools, and dramatic volcanic landscape along Hot Creek.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
fossil site
ⓘ
national monument ⓘ protected area ⓘ |
| area | approximately 3,055 acres ⓘ |
| associatedWith |
Agate Springs Ranch
ⓘ
Carnegie Museum of Natural History ⓘ James H. Cook ⓘ |
| authorizedAsNationalMonument | June 5, 1965 ⓘ |
| contains |
Agate Springs Ranch fossil quarries
ⓘ
linked to:
Agate Fossil Beds National Monument
Carnegie Hill ⓘ
linked to:
Upper East Side
University Hill ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| designationReason |
preservation of mixed-grass prairie landscape
ⓘ
protection of significant Miocene fossil deposits ⓘ |
| ecosystem | Great Plains prairie ⓘ |
| established | 1965 ⓘ |
| fossilAssemblage |
Agate Springs Fossil Quarries
ⓘ
linked to:
Agate Fossil Beds National Monument
|
| fossilsFrom | early Miocene epoch ⓘ |
| geologicAge | Miocene ⓘ |
| governingBody | National Park Service ⓘ |
| hasExhibit |
Lakota and Plains Indian cultural collections
ⓘ
Miocene mammal fossil displays ⓘ |
| IUCNCategory | III ⓘ |
| knownFor |
Miocene fossil beds
ⓘ
preserved mixed-grass prairie ⓘ well-preserved mammal fossils ⓘ |
| landscapeType | mixed-grass prairie ⓘ |
| locatedIn |
Nebraska
ⓘ
Sioux County, Nebraska ⓘ |
| nearestCity | Harrison, Nebraska ⓘ |
| notableFossilTaxa |
Dinohyus
ⓘ
Menoceras ⓘ Moropus ⓘ Palaeocastor ⓘ Stenomylus ⓘ |
| offersActivity |
fossil interpretation
ⓘ
hiking ⓘ wildlife viewing ⓘ |
| openedToPublic | 1977 ⓘ |
| partOf |
National Park System
ⓘ
linked to:
United States National Park System
|
| region | western Nebraska ⓘ |
| state | Nebraska ⓘ |
| visitorCenter |
Agate Fossil Beds National Monument Visitor Center
ⓘ
linked to:
Agate Fossil Beds National Monument
|
| watercourse | Niobrara River tributaries ⓘ |
| website | https://www.nps.gov/agfo/index.htm ⓘ |
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: Agate Fossil Beds National Monument Description of subject: Agate Fossil Beds National Monument is a protected area in western Nebraska renowned for its exceptionally rich Miocene-era fossil deposits and preserved prairie landscape.
Referenced by (16)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Agate Fossil Beds National Monument
linked to: Agate Fossil Beds National Monument
Agate Fossil Beds National Monument
→
visitorCenter
→
Agate Fossil Beds National Monument Visitor Center
ⓘ
linked to: Agate Fossil Beds National Monument
linked to: Agate Fossil Beds National Monument
linked to: Agate Fossil Beds National Monument
linked to: Agate Fossil Beds National Monument
linked to: Agate Fossil Beds National Monument
subject linked to:
present-day Nebraska