Rama Yantra
E306140
Rama Yantra is an astronomical instrument at Jaipur’s Jantar Mantar observatory, designed as a cylindrical structure to measure the altitude and azimuth of celestial bodies.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Rama Yantra canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2838528 — 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: Rama Yantra Context triple: [Jantar Mantar, Jaipur, hasPart, Rama Yantra]
-
A.
Rama Yantra
Rama Yantra is a large cylindrical astronomical instrument at Jantar Mantar in New Delhi used for measuring the altitude and azimuth of celestial bodies.
-
B.
Shanku Yantra
Shanku Yantra is an ancient gnomon-based sundial instrument at Jantar Mantar in New Delhi used for measuring time and the Sun’s position.
-
C.
Misra Yantra
Misra Yantra is an astronomical instrument at Jantar Mantar in New Delhi, historically used to measure time and celestial positions with high precision.
-
D.
Jai Prakash Yantra
Jai Prakash Yantra is an astronomical instrument at Jaipur’s Jantar Mantar observatory used to measure the positions of celestial bodies with high precision.
-
E.
Yantra
Yantra is a major river in northern Bulgaria that flows through cities like Veliko Tarnovo before joining the Danube.
- 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: Rama Yantra Target entity description: Rama Yantra is an astronomical instrument at Jaipur’s Jantar Mantar observatory, designed as a cylindrical structure to measure the altitude and azimuth of celestial bodies.
-
A.
Rama Yantra
Rama Yantra is a large cylindrical astronomical instrument at Jantar Mantar in New Delhi used for measuring the altitude and azimuth of celestial bodies.
-
B.
Shanku Yantra
Shanku Yantra is an ancient gnomon-based sundial instrument at Jantar Mantar in New Delhi used for measuring time and the Sun’s position.
-
C.
Misra Yantra
Misra Yantra is an astronomical instrument at Jantar Mantar in New Delhi, historically used to measure time and celestial positions with high precision.
-
D.
Jai Prakash Yantra
Jai Prakash Yantra is an astronomical instrument at Jaipur’s Jantar Mantar observatory used to measure the positions of celestial bodies with high precision.
-
E.
Yantra
Yantra is a major river in northern Bulgaria that flows through cities like Veliko Tarnovo before joining the Danube.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
architectural structure
ⓘ
astronomical instrument ⓘ |
| alsoKnownAs |
Jantar Mantar, Jaipur
ⓘ
surface form:
Rama Yantra instrument at Jantar Mantar, Jaipur
|
| associatedWith |
Hindu astronomical tradition
ⓘ
Mughal-era scientific architecture ⓘ |
| builtBy |
Maharaja Jai Singh II
ⓘ
surface form:
Sawai Jai Singh II
|
| coordinateSystemMeasured |
altitude
ⓘ
azimuth ⓘ |
| country | India ⓘ |
| designedBy | court astronomers of Sawai Jai Singh II ⓘ |
| designedFor | direct reading of altitude and azimuth from instrument surfaces ⓘ |
| era | early 18th century ⓘ |
| field |
astronomy
ⓘ
observational astronomy ⓘ |
| governedBy | Archaeological Survey of India ⓘ |
| hasComponent |
central pillar
ⓘ
cylindrical walls with open top ⓘ radial floor markings ⓘ vertical wall markings ⓘ |
| hasTwinIn | Jantar Mantar, New Delhi ⓘ |
| heritageStatus | UNESCO World Heritage Site component ⓘ |
| influencedBy | Islamic astronomical instruments ⓘ |
| locatedIn |
India
ⓘ
Jaipur ⓘ Jantar Mantar, Jaipur ⓘ Rajasthan ⓘ |
| material | masonry ⓘ |
| measurementType | positional astronomy measurements ⓘ |
| observes |
Sun
ⓘ
fixed stars ⓘ planets ⓘ |
| openTo | sky ⓘ |
| partOf |
Jantar Mantar, Jaipur
ⓘ
surface form:
Jantar Mantar observatory, Jaipur
set of masonry astronomical instruments at Jantar Mantar, Jaipur ⓘ |
| preservationStatus | well-preserved ⓘ |
| readingMethod | shadow and alignment of sight lines on marked surfaces ⓘ |
| shape | cylindrical structure ⓘ |
| state | Rajasthan ⓘ |
| tourismCategory |
cultural heritage site
ⓘ
scientific heritage monument ⓘ |
| touristAttraction | yes ⓘ |
| UNESCOProperty | Jantar Mantar, Jaipur ⓘ |
| usedFor |
measuring altitude of celestial bodies
ⓘ
measuring azimuth of celestial bodies ⓘ |
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: Rama Yantra Description of subject: Rama Yantra is an astronomical instrument at Jaipur’s Jantar Mantar observatory, designed as a cylindrical structure to measure the altitude and azimuth of celestial bodies.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.