Allahabad Observatory
E637023
Allahabad Observatory is a historic astronomical observatory in India that serves as the reference location for Indian Standard Time.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Allahabad Observatory canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7018222 — 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: Allahabad Observatory Context triple: [IST, principalMeridianReference, Allahabad Observatory]
-
A.
Madras Observatory
Madras Observatory was a historic astronomical observatory in colonial India that played a key role in timekeeping, celestial observations, and the development of regional standard time.
-
B.
Armagh Observatory
Armagh Observatory is a historic astronomical research institution in Northern Ireland known for its long-running observations and contributions to the study of the night sky.
-
C.
Jantar Mantar, New Delhi
Jantar Mantar, New Delhi is an 18th-century astronomical observatory built by Maharaja Jai Singh II, featuring large masonry instruments used for precise naked-eye observations of celestial bodies.
-
D.
Kew Observatory
Kew Observatory is a historic scientific observatory in southwest London, renowned for its 18th- and 19th-century work in astronomy, meteorology, and geomagnetism.
-
E.
Mamalluca Observatory
Mamalluca Observatory is a popular public astronomical observatory in Chile’s Elqui Valley, renowned for its exceptionally clear skies and stargazing tourism.
- 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: Allahabad Observatory Target entity description: Allahabad Observatory is a historic astronomical observatory in India that serves as the reference location for Indian Standard Time.
-
A.
Madras Observatory
Madras Observatory was a historic astronomical observatory in colonial India that played a key role in timekeeping, celestial observations, and the development of regional standard time.
-
B.
Armagh Observatory
Armagh Observatory is a historic astronomical research institution in Northern Ireland known for its long-running observations and contributions to the study of the night sky.
-
C.
Jantar Mantar, New Delhi
Jantar Mantar, New Delhi is an 18th-century astronomical observatory built by Maharaja Jai Singh II, featuring large masonry instruments used for precise naked-eye observations of celestial bodies.
-
D.
Kew Observatory
Kew Observatory is a historic scientific observatory in southwest London, renowned for its 18th- and 19th-century work in astronomy, meteorology, and geomagnetism.
-
E.
Mamalluca Observatory
Mamalluca Observatory is a popular public astronomical observatory in Chile’s Elqui Valley, renowned for its exceptionally clear skies and stargazing tourism.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical observatory
ⓘ
timekeeping facility ⓘ |
| associatedWith |
Indian timekeeping system
ⓘ
University of Allahabad ⓘ |
| cityCurrentName |
Prayagraj
ⓘ
linked to:
Allahabad
|
| cityFormerName | Allahabad ⓘ |
| coordinateSystemRole | standard meridian of India ⓘ |
| country | India ⓘ |
| countryTimeStandardFor |
Republic of India
ⓘ
linked to:
India
|
| discipline |
astrometry
ⓘ
astronomy ⓘ time metrology ⓘ |
| function | maintaining standard time reference ⓘ |
| hasRole | national time reference point ⓘ |
| heritageStatus | historic observatory ⓘ |
| locatedIn |
Prayagraj
ⓘ
linked to:
Allahabad
Uttar Pradesh ⓘ |
| locatedInContinent | Asia ⓘ |
| locatedOn | the campus of the University of Allahabad ⓘ |
| longitude | 82.5 degrees east ⓘ |
| region |
North India
ⓘ
linked to:
northern India
|
| servesAs | reference location for Indian Standard Time ⓘ |
| timeZoneReference | Indian Standard Time ⓘ |
| usedFor |
astronomical observations
ⓘ
time determination ⓘ |
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: Allahabad Observatory Description of subject: Allahabad Observatory is a historic astronomical observatory in India that serves as the reference location for Indian Standard Time.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.