Nadi Valaya Yantra
E307646
Nadi Valaya Yantra is an ancient sundial-like astronomical instrument at Jaipur’s Jantar Mantar used to measure time based on the position of the sun.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Nadi Valaya Yantra canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2838530 — 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: Nadi Valaya Yantra Context triple: [Jantar Mantar, Jaipur, hasPart, Nadi Valaya Yantra]
-
A.
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.
-
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.
Karnti Vritya Yantra
Karnti Vritya Yantra is a specialized astronomical instrument at Jaipur’s Jantar Mantar observatory used to study the obliquity and motion of the ecliptic.
-
D.
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.
-
E.
Rama Yantra
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.
- 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: Nadi Valaya Yantra Target entity description: Nadi Valaya Yantra is an ancient sundial-like astronomical instrument at Jaipur’s Jantar Mantar used to measure time based on the position of the sun.
-
A.
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.
-
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.
Karnti Vritya Yantra
Karnti Vritya Yantra is a specialized astronomical instrument at Jaipur’s Jantar Mantar observatory used to study the obliquity and motion of the ecliptic.
-
D.
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.
-
E.
Rama Yantra
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.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical instrument
ⓘ
heritage monument ⓘ sundial ⓘ |
| associatedWith |
Maharaja Sawai Jai Singh II
ⓘ
linked to:
Maharaja Jai Singh II
|
| basedOn | position of the Sun ⓘ |
| constructionPeriod | early 18th century ⓘ |
| country | India ⓘ |
| culturalContext |
Hindu astronomy
ⓘ
Indian astronomy ⓘ |
| hasDesign | sundial-like ⓘ |
| heritageStatus | part of UNESCO World Heritage Site Jantar Mantar, Jaipur ⓘ |
| locatedIn |
India
ⓘ
Jaipur ⓘ Jantar Mantar, Jaipur ⓘ Rajasthan ⓘ |
| material |
masonry
ⓘ
stone ⓘ |
| measures |
apparent motion of the Sun
ⓘ
local solar time ⓘ |
| operatesOn | shadow casting principle ⓘ |
| partOf |
Jantar Mantar observatory complex, Jaipur
ⓘ
linked to:
Jantar Mantar, Jaipur
|
| touristAttraction | yes ⓘ |
| usedFor |
astronomical observations
ⓘ
measuring time ⓘ solar time measurement ⓘ |
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: Nadi Valaya Yantra Description of subject: Nadi Valaya Yantra is an ancient sundial-like astronomical instrument at Jaipur’s Jantar Mantar used to measure time based on the position of the sun.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.