Tropic of Cancer
E4538
The Tropic of Cancer is the northernmost latitude on Earth where the sun can appear directly overhead, marking the boundary of the tropical zone in the Northern Hemisphere.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Tropic of Cancer canonical | 17 |
| Tropic of C | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T30740 — 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: Tropic of Cancer Context triple: [Northern Hemisphere, containsLine, Tropic of Cancer]
-
A.
Equator
The Equator is an imaginary line encircling the Earth at equal distance from the poles, dividing the planet into Northern and Southern Hemispheres and marking 0° latitude.
-
B.
Culebra
Culebra is a small Caribbean island municipality of Puerto Rico known for its pristine beaches, clear waters, and protected wildlife refuges.
-
C.
Bermuda Triangle
The Bermuda Triangle is a loosely defined region of the western North Atlantic Ocean infamous for numerous mysterious ship and aircraft disappearances.
-
D.
The Crossroads of the World
The Crossroads of the World is a famous nickname for New York City's Times Square, a major commercial and entertainment hub renowned for its bright billboards, Broadway theaters, and bustling pedestrian traffic.
-
E.
Isthmus of Panama
The Isthmus of Panama is the narrow strip of land in Central America that links North and South America and separates the Caribbean Sea from the Pacific Ocean.
- 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: Tropic of Cancer Target entity description: The Tropic of Cancer is the northernmost latitude on Earth where the sun can appear directly overhead, marking the boundary of the tropical zone in the Northern Hemisphere.
-
A.
Equator
The Equator is an imaginary line encircling the Earth at equal distance from the poles, dividing the planet into Northern and Southern Hemispheres and marking 0° latitude.
-
B.
Culebra
Culebra is a small Caribbean island municipality of Puerto Rico known for its pristine beaches, clear waters, and protected wildlife refuges.
-
C.
Bermuda Triangle
The Bermuda Triangle is a loosely defined region of the western North Atlantic Ocean infamous for numerous mysterious ship and aircraft disappearances.
-
D.
The Crossroads of the World
The Crossroads of the World is a famous nickname for New York City's Times Square, a major commercial and entertainment hub renowned for its bright billboards, Broadway theaters, and bustling pedestrian traffic.
-
E.
Isthmus of Panama
The Isthmus of Panama is the narrow strip of land in Central America that links North and South America and separates the Caribbean Sea from the Pacific Ocean.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
circle of latitude
ⓘ
geographical line ⓘ |
| associatedWith | June solstice in Northern Hemisphere ⓘ |
| axialTiltReference | obliquity of the ecliptic ⓘ |
| complements | Tropic of Capricorn ⓘ |
| coordinateSystem | geographic coordinate system ⓘ |
| definedBy | axial tilt of the Earth ⓘ |
| description | northernmost latitude where the Sun can appear directly overhead ⓘ |
| distanceFromEquator | about 2600 km ⓘ |
| distanceFromNorthPole | about 4670 km ⓘ |
| hasProperty | position slowly changes over time due to axial precession ⓘ |
| hemisphere | Northern Hemisphere ⓘ |
| historicalReasonForName | Sun was in constellation Cancer at June solstice in classical antiquity ⓘ |
| latitude |
approximately 23.5° N
ⓘ
approximately 23°26′ N ⓘ |
| locatedIn | Northern Hemisphere ⓘ |
| marksBoundaryOf |
Torrid Zone
ⓘ
tropical zone ⓘ |
| namedAfter | constellation Cancer ⓘ |
| oppositeLatitude | Tropic of Capricorn ⓘ |
| parallelTo | Equator ⓘ |
| passesThrough |
Algeria
ⓘ
Arabian Sea ⓘ
surface form:
Arabian Sea region
Atlantic Ocean ⓘ Bahamas ⓘ People's Republic of Bangladesh (from East Pakistan) ⓘ
surface form:
Bangladesh
Bay of Bengal ⓘ
surface form:
Bay of Bengal region
China ⓘ Egypt ⓘ India ⓘ Libya ⓘ Mali ⓘ Mauritania ⓘ Mexico ⓘ Mexico Gulf of California region ⓘ Myanmar ⓘ Niger ⓘ Oman ⓘ Pacific Ocean ⓘ Saudi Arabia ⓘ South China Sea ⓘ
surface form:
South China Sea region
Formosa ⓘ
surface form:
Taiwan
United Arab Emirates ⓘ Spanish Sahara ⓘ
surface form:
Western Sahara
|
| relatedTo | summer solstice ⓘ |
| solarEvent | Sun is directly overhead at local noon on June solstice ⓘ |
| usedIn |
cartography
ⓘ
climate classification ⓘ defining tropical climate regions ⓘ navigation ⓘ |
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: Tropic of Cancer Description of subject: The Tropic of Cancer is the northernmost latitude on Earth where the sun can appear directly overhead, marking the boundary of the tropical zone in the Northern Hemisphere.
Referenced by (18)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Tropic of C