31st parallel north
E328676
The 31st parallel north is a circle of latitude in the Northern Hemisphere that has historically served as a significant political boundary, including as a colonial border in the southeastern United States.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 31st parallel north canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3123645 — 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: 31st parallel north Context triple: [West Florida, originalNorthernBoundary, 31st parallel north]
-
A.
Twenty Eighth Parallel
"Twenty Eighth Parallel" is an atmospheric instrumental track by Vangelis from his 1992 film score for *1492: Conquest of Paradise*, known for its evocative, cinematic soundscapes.
-
B.
San Bernardino meridian
The San Bernardino meridian is a principal survey meridian used as a reference line for land surveying and mapping in Southern California and parts of Nevada.
-
C.
Tropic of Cancer
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.
-
D.
Tropic of Capricorn
The Tropic of Capricorn is the southernmost latitude where the sun can appear directly overhead, marking an important boundary of the Earth's tropical zone.
-
E.
Great Arc of the Meridian
The Great Arc of the Meridian was a monumental 19th-century geodetic survey line across the Indian subcontinent that played a key role in measuring the Earth’s shape and refining global maps.
- 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: 31st parallel north Target entity description: The 31st parallel north is a circle of latitude in the Northern Hemisphere that has historically served as a significant political boundary, including as a colonial border in the southeastern United States.
-
A.
Twenty Eighth Parallel
"Twenty Eighth Parallel" is an atmospheric instrumental track by Vangelis from his 1992 film score for *1492: Conquest of Paradise*, known for its evocative, cinematic soundscapes.
-
B.
San Bernardino meridian
The San Bernardino meridian is a principal survey meridian used as a reference line for land surveying and mapping in Southern California and parts of Nevada.
-
C.
Tropic of Cancer
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.
-
D.
Tropic of Capricorn
The Tropic of Capricorn is the southernmost latitude where the sun can appear directly overhead, marking an important boundary of the Earth's tropical zone.
-
E.
Great Arc of the Meridian
The Great Arc of the Meridian was a monumental 19th-century geodetic survey line across the Indian subcontinent that played a key role in measuring the Earth’s shape and refining global maps.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf | circle of latitude ⓘ |
| coordinateSystem | geographic coordinate system ⓘ |
| crossesContinent |
Africa
ⓘ
Asia ⓘ North America ⓘ |
| crossesOcean |
Atlantic Ocean
ⓘ
Pacific Ocean ⓘ |
| crossesSea | Mediterranean Sea ⓘ |
| hasAngularDistanceFromEquator | 31 degrees ⓘ |
| hasApproximateLength | approximately 34,600 kilometers ⓘ |
| hasClimate | varies from arid to subtropical depending on longitude ⓘ |
| hasHemisphere | Northern Hemisphere ⓘ |
| hasLatitude | 31 degrees north ⓘ |
| hasSolarDeclinationRelation | Sun is directly overhead at noon when solar declination is 31 degrees north ⓘ |
| hasTimeZoneRange | spans multiple time zones ⓘ |
| hasType | geodetic latitude line ⓘ |
| isNorthOf |
30th parallel north
ⓘ
Equator ⓘ |
| isParallelOf | Equator ⓘ |
| isPartOf | Earth coordinate grid ⓘ |
| isSouthOf | 32nd parallel north ⓘ |
| locatedIn | Northern Hemisphere ⓘ |
| passesThrough |
Algeria
ⓘ
Bermuda Triangle ⓘ
surface form:
Bermuda Triangle region
China ⓘ East Asia ⓘ Egypt ⓘ India ⓘ Iran ⓘ Iraq ⓘ Israel ⓘ Japan ⓘ Jordan ⓘ Libya ⓘ Mediterranean Sea ⓘ Mexico ⓘ Middle East ⓘ North Africa ⓘ North America ⓘ Atlantic Ocean ⓘ
surface form:
North Atlantic Ocean
Northern Pacific Ocean ⓘ
surface form:
North Pacific Ocean
Pakistan ⓘ Saudi Arabia ⓘ South Asia ⓘ South Korea ⓘ United States of America ⓘ
surface form:
United States
|
| usedAs |
boundary in the southeastern United States
ⓘ
colonial border ⓘ political boundary ⓘ |
| usedHistoricallyAs |
boundary between British West Florida and Spanish territory
ⓘ
reference line in treaties involving the southeastern United States ⓘ |
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: 31st parallel north Description of subject: The 31st parallel north is a circle of latitude in the Northern Hemisphere that has historically served as a significant political boundary, including as a colonial border in the southeastern United States.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.