Portland Race
E531770
Portland Race is a notoriously powerful tidal race off the coast of Dorset, England, known for its hazardous overfalls and strong currents that challenge vessels navigating around Portland Bill.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Portland Race canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5497286 — 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: Portland Race Context triple: [Portland Bill, hasTidalRace, Portland Race]
-
A.
Mount Wilson Trail Race
The Mount Wilson Trail Race is a historic and challenging annual mountain running event in Southern California that follows one of the region’s oldest hiking trails up the slopes of Mount Wilson.
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B.
Portland International Raceway
Portland International Raceway is a motorsports complex in Portland, Oregon, known for hosting professional auto racing events including IndyCar and other major series.
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C.
Boston Marathon
The Boston Marathon is the world’s oldest annual marathon and one of the most prestigious long-distance running races, attracting elite and amateur runners from around the globe each Patriots’ Day.
-
D.
Prefontaine Classic track meet
The Prefontaine Classic track meet is a premier annual international athletics competition in Eugene, Oregon, renowned as part of the top-tier Diamond League circuit and named in memory of American distance-running legend Steve Prefontaine.
-
E.
Midtown Mile
Midtown Mile is a prominent mixed-use retail and dining corridor along Peachtree Street in Atlanta’s Midtown neighborhood, known for its upscale shops, restaurants, and urban streetscape.
- 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: Portland Race Target entity description: Portland Race is a notoriously powerful tidal race off the coast of Dorset, England, known for its hazardous overfalls and strong currents that challenge vessels navigating around Portland Bill.
-
A.
Mount Wilson Trail Race
The Mount Wilson Trail Race is a historic and challenging annual mountain running event in Southern California that follows one of the region’s oldest hiking trails up the slopes of Mount Wilson.
-
B.
Portland International Raceway
Portland International Raceway is a motorsports complex in Portland, Oregon, known for hosting professional auto racing events including IndyCar and other major series.
-
C.
Boston Marathon
The Boston Marathon is the world’s oldest annual marathon and one of the most prestigious long-distance running races, attracting elite and amateur runners from around the globe each Patriots’ Day.
-
D.
Prefontaine Classic track meet
The Prefontaine Classic track meet is a premier annual international athletics competition in Eugene, Oregon, renowned as part of the top-tier Diamond League circuit and named in memory of American distance-running legend Steve Prefontaine.
-
E.
Midtown Mile
Midtown Mile is a prominent mixed-use retail and dining corridor along Peachtree Street in Atlanta’s Midtown neighborhood, known for its upscale shops, restaurants, and urban streetscape.
- F. None of above. chosen
Statements (38)
| Predicate | Object |
|---|---|
| instanceOf |
marine hazard
ⓘ
tidal race ⓘ |
| canBeExacerbatedBy |
strong winds
ⓘ
wind-against-tide conditions ⓘ |
| country | England ⓘ |
| formedBy |
convergence of tidal flows around Portland Bill
ⓘ
interaction of strong tidal streams with seabed topography ⓘ |
| hasAlternativeRoute |
inshore passage close to Portland Bill in suitable conditions
ⓘ
offshore route well clear of the race ⓘ |
| hasCharacteristic |
hazardous overfalls
ⓘ
steep breaking seas ⓘ strong tidal currents ⓘ turbulent water ⓘ |
| hasReputationFor |
challenging conditions for small craft
ⓘ
dangerous navigation conditions ⓘ |
| hasTidalStreamDirection | parallel to the coast around Portland Bill ⓘ |
| isAssociatedWith |
Portland Bill Lighthouse
ⓘ
linked to:
Portland Bill lighthouse
ship handling training and seamanship practice ⓘ |
| isAvoidedBy | many small vessels in adverse conditions ⓘ |
| isHazardTo | vessels rounding Portland Bill ⓘ |
| isKnownSince | age of sail ⓘ |
| isMentionedIn |
Admiralty Sailing Directions
ⓘ
nautical pilot books ⓘ |
| isMonitoredBy | local coastguard services ⓘ |
| isPartOf | coastal waters of southern England ⓘ |
| isSignificantFor | maritime navigation in the English Channel ⓘ |
| isSubjectOf | local maritime safety advisories ⓘ |
| locatedIn | Dorset ⓘ |
| locatedInBodyOfWater | English Channel ⓘ |
| locatedNear | Isle of Portland ⓘ |
| locatedOffCoastOf | Portland Bill ⓘ |
| navigationAdvice |
avoid in small craft during rough weather
ⓘ
cross at slack water where possible ⓘ |
| navigationWarning | dangerous in strong winds and against-tide conditions ⓘ |
| occursDuring |
spring tides
ⓘ
strong tidal flows ⓘ |
| requires |
careful passage planning
ⓘ
timing of transit with favorable tide ⓘ |
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: Portland Race Description of subject: Portland Race is a notoriously powerful tidal race off the coast of Dorset, England, known for its hazardous overfalls and strong currents that challenge vessels navigating around Portland Bill.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.