C2r
E675180
C2r is the standard magnetic polarity chron code assigned to the Gauss–Matuyama geomagnetic reversal interval in the geomagnetic polarity timescale.
All labels observed (1)
| Label | Occurrences |
|---|---|
| C2r canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7581757 — 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: C2r Context triple: [Gauss–Matuyama geomagnetic reversal, hasMagneticChronCode, C2r]
-
A.
C2
C2 is the software consultancy founded by Ward Cunningham, best known for creating the first wiki and contributing to agile software development practices.
-
B.
C-2
C-2 is a commuter rail line within the Cercanías Madrid network that connects central Madrid with its surrounding metropolitan areas.
-
C.
C218
C218 is the internal designation for the second-generation Mercedes-Benz CLS, a luxury four-door coupé produced in the early to mid-2010s.
-
D.
C4
C4 is a military acronym referring to the integrated system of command, control, communications, and computers that supports decision-making and operations.
-
E.
C.
C. is the initial of the given name of C. Robert Kehler, a retired United States Air Force general who formerly commanded U.S. Strategic Command.
- 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: C2r Target entity description: C2r is the standard magnetic polarity chron code assigned to the Gauss–Matuyama geomagnetic reversal interval in the geomagnetic polarity timescale.
-
A.
C2
C2 is the software consultancy founded by Ward Cunningham, best known for creating the first wiki and contributing to agile software development practices.
-
B.
C-2
C-2 is a commuter rail line within the Cercanías Madrid network that connects central Madrid with its surrounding metropolitan areas.
-
C.
C218
C218 is the internal designation for the second-generation Mercedes-Benz CLS, a luxury four-door coupé produced in the early to mid-2010s.
-
D.
C4
C4 is a military acronym referring to the integrated system of command, control, communications, and computers that supports decision-making and operations.
-
E.
C.
C. is the initial of the given name of C. Robert Kehler, a retired United States Air Force general who formerly commanded U.S. Strategic Command.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
geomagnetic polarity chron code
ⓘ
magnetic polarity chron ⓘ |
| appliesTo |
early Pleistocene
ⓘ
late Pliocene ⓘ |
| assignedTo |
Gauss–Matuyama geomagnetic reversal interval
ⓘ
linked to:
Gauss–Matuyama geomagnetic reversal
|
| chronNumber | 2 ⓘ |
| chronSubunit | r ⓘ |
| correspondsTo | Gauss–Matuyama geomagnetic reversal ⓘ |
| follows | C2n ⓘ |
| hasAbbreviation | C2r ⓘ |
| hasName | C2r ⓘ |
| hasPolarity | reversed polarity ⓘ |
| hasPolarityType | reversed chron ⓘ |
| hasStandardCode | C2r ⓘ |
| partOf | geomagnetic polarity timescale ⓘ |
| precedes | C1r ⓘ |
| relatedTo |
Gauss chron
ⓘ
Matuyama chron ⓘ
linked to:
Matuyama reversed chron
|
| represents | interval of reversed geomagnetic field ⓘ |
| standardizedIn | geomagnetic polarity time scale conventions ⓘ |
| usedBy |
geologists
ⓘ
paleomagnetists ⓘ |
| usedIn |
geologic time scale correlation
ⓘ
magnetostratigraphy ⓘ paleomagnetism ⓘ |
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: C2r Description of subject: C2r is the standard magnetic polarity chron code assigned to the Gauss–Matuyama geomagnetic reversal interval in the geomagnetic polarity timescale.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.