Patapsco Valley State Park
E124386
Patapsco Valley State Park is a large, historically significant Maryland state park known for its wooded river valley, extensive hiking and biking trails, and scenic waterfalls along the Patapsco River.
All labels observed (12)
How this entity was disambiguated
This entity first appeared as the object of triple T886025 — 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: Patapsco Valley State Park Context triple: [Howard County, hasPark, Patapsco Valley State Park]
-
A.
Great Falls Park
Great Falls Park is a U.S. national park along the Potomac River in Virginia, known for its dramatic waterfalls, rugged river gorge, and hiking and viewing opportunities near Washington, D.C.
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B.
East Potomac Park
East Potomac Park is a large recreational island park in Washington, D.C., known for its golf course, cherry blossoms, and scenic waterfront views of the Potomac River and Washington Channel.
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C.
Lake Accotink Park
Lake Accotink Park is a popular Fairfax County, Virginia recreational area centered around Lake Accotink, offering trails, boating, picnicking, and other outdoor activities.
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D.
Letchworth State Park
Letchworth State Park is a renowned New York state park often called the "Grand Canyon of the East," known for its dramatic gorge, waterfalls, and scenic hiking trails.
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E.
Rock Creek Park
Rock Creek Park is a large urban national park in Washington, D.C., known for its wooded trails, scenic creek, and recreational facilities.
- 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: Patapsco Valley State Park Target entity description: Patapsco Valley State Park is a large, historically significant Maryland state park known for its wooded river valley, extensive hiking and biking trails, and scenic waterfalls along the Patapsco River.
-
A.
Great Falls Park
Great Falls Park is a U.S. national park along the Potomac River in Virginia, known for its dramatic waterfalls, rugged river gorge, and hiking and viewing opportunities near Washington, D.C.
-
B.
East Potomac Park
East Potomac Park is a large recreational island park in Washington, D.C., known for its golf course, cherry blossoms, and scenic waterfront views of the Potomac River and Washington Channel.
-
C.
Lake Accotink Park
Lake Accotink Park is a popular Fairfax County, Virginia recreational area centered around Lake Accotink, offering trails, boating, picnicking, and other outdoor activities.
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D.
Letchworth State Park
Letchworth State Park is a renowned New York state park often called the "Grand Canyon of the East," known for its dramatic gorge, waterfalls, and scenic hiking trails.
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E.
Rock Creek Park
Rock Creek Park is a large urban national park in Washington, D.C., known for its wooded trails, scenic creek, and recreational facilities.
- F. None of above. chosen
Statements (92)
| Predicate | Object |
|---|---|
| instanceOf |
protected area
ⓘ
state park ⓘ tourist attraction ⓘ |
| climate | humid subtropical to humid continental transition ⓘ |
| contains |
Thomas Viaduct vicinity
ⓘ
remains of historic ironworks ⓘ remains of historic railroad infrastructure ⓘ ruins of the Bloede Dam site ⓘ ruins of the Orange Grove Flour Mill ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| ecosystemType |
Piedmont forest
ⓘ
riparian corridor ⓘ |
| established | 1907 ⓘ |
| follows | Patapsco River ⓘ |
| hasActivity |
birdwatching
ⓘ
camping ⓘ canoeing ⓘ cross-country skiing ⓘ fishing ⓘ geocaching ⓘ hiking ⓘ horseback riding ⓘ kayaking ⓘ mountain biking ⓘ nature photography ⓘ picnicking ⓘ trail running ⓘ tubing ⓘ |
| hasCamping | yes ⓘ |
| hasDesignation | Maryland state park ⓘ |
| hasFloodRisk | yes ⓘ |
| hasPart |
Avalon Area
ⓘ
Buzzard Rock Trail ⓘ Cascade Falls ⓘ Daniels Area ⓘ Glen Artney Area ⓘ Grist Mill Trail ⓘ Henryton Area ⓘ Hilton Area ⓘ Hollofield Area ⓘ McKeldin Area ⓘ Morgan Run Natural Environment Area ⓘ Old Main Line Trail ⓘ Orange Grove Area ⓘ Patapsco Valley State Park Suspension Bridge ⓘ Pickall Area ⓘ Rockburn Branch Park (adjacent) ⓘ Sawmill Branch Trail ⓘ Soapstone Trail ⓘ Thru Trail ⓘ Union Dam Trail ⓘ |
| hasPicnicShelters | yes ⓘ |
| hasPlant |
ferns
ⓘ
maple trees ⓘ mountain laurel ⓘ oak trees ⓘ |
| hasTrailLength | over 200 miles of trails ⓘ |
| hasVisitorCenter | yes ⓘ |
| hasWaterBody | Patapsco River ⓘ |
| hasWildlife |
beaver
ⓘ
great blue heron ⓘ songbirds ⓘ white-tailed deer ⓘ wild turkey ⓘ |
| historicalSignificance |
Civilian Conservation Corps structures
ⓘ
linked to:
Civilian Conservation Corps
early American industrial sites ⓘ railroad history ⓘ ruins of mills ⓘ |
| inception | 1907 ⓘ |
| locatedIn |
Anne Arundel County
ⓘ
Baltimore County ⓘ Carroll County ⓘ Howard County ⓘ Maryland ⓘ |
| managingOrganization | Maryland Department of Natural Resources ⓘ |
| namedAfter | Patapsco River ⓘ |
| nearestCity |
Baltimore
ⓘ
Ellicott City ⓘ |
| notableFor |
hiking trails
ⓘ
historic sites ⓘ mountain biking trails ⓘ scenic waterfalls ⓘ swinging bridge ⓘ wooded river valley ⓘ |
| openToPublic | yes ⓘ |
| operator | Maryland Park Service ⓘ |
| subjectTo | periodic flooding of the Patapsco River ⓘ |
| terrainFeature |
deciduous forest
ⓘ
rapids ⓘ river gorge ⓘ rocky outcrops ⓘ waterfalls ⓘ |
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: Patapsco Valley State Park Description of subject: Patapsco Valley State Park is a large, historically significant Maryland state park known for its wooded river valley, extensive hiking and biking trails, and scenic waterfalls along the Patapsco River.
Referenced by (46)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Billy Goat Trail (nearby on Maryland side)
linked to: Patapsco Valley State Park
linked to: Patapsco Valley State Park
linked to: Patapsco Valley State Park
linked to: Patapsco Valley State Park
linked to: Patapsco Valley State Park
Orange Grove Area
→
partOf
→
Patapsco Valley State Park Orange Grove Area – Avalon – Glen Artney – Hilton complex
ⓘ
linked to: Patapsco Valley State Park
linked to: Patapsco Valley State Park
linked to: Patapsco Valley State Park
linked to: Patapsco Valley State Park
linked to: Patapsco Valley State Park
linked to: Patapsco Valley State Park
linked to: Patapsco Valley State Park
subject linked to:
Rockburn Branch Park (adjacent)
linked to: Patapsco Valley State Park
Patapsco Valley State Park Suspension Bridge
→
locatedInProtectedArea
→
Patapsco Valley State Park
ⓘ
linked to: Patapsco Valley State Park
subject linked to:
Relay