Jantar Mantar, New Delhi
E20130
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.
All labels observed (9)
How this entity was disambiguated
This entity first appeared as the object of triple T152378 — 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: Jantar Mantar, New Delhi Context triple: [New Delhi, hasLandmark, Jantar Mantar, New Delhi]
-
A.
Tara Mandir Planetarium
Tara Mandir Planetarium is a popular astronomical attraction in Porbandar, India, featuring educational shows and exhibits about space and celestial phenomena.
-
B.
National Museum, New Delhi
The National Museum in New Delhi is one of India’s largest and most important museums, housing extensive collections that span 5,000 years of the subcontinent’s art, history, and cultural heritage.
-
C.
Red Fort
The Red Fort is a historic 17th-century sandstone fortress in Delhi, India, that served as the main residence of Mughal emperors and now stands as a prominent symbol of India's heritage and independence.
-
D.
Jama Masjid, Delhi
Jama Masjid, Delhi is one of India’s largest and most famous mosques, built in the 17th century under Mughal emperor Shah Jahan and renowned for its grand red sandstone and marble architecture.
-
E.
Palace of Assembly, Chandigarh
The Palace of Assembly in Chandigarh is a landmark modernist government building in India, renowned for its bold concrete architecture and symbolic design by Swiss-French architect Le Corbusier.
- 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: Jantar Mantar, New Delhi Target entity description: 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.
-
A.
Tara Mandir Planetarium
Tara Mandir Planetarium is a popular astronomical attraction in Porbandar, India, featuring educational shows and exhibits about space and celestial phenomena.
-
B.
National Museum, New Delhi
The National Museum in New Delhi is one of India’s largest and most important museums, housing extensive collections that span 5,000 years of the subcontinent’s art, history, and cultural heritage.
-
C.
Red Fort
The Red Fort is a historic 17th-century sandstone fortress in Delhi, India, that served as the main residence of Mughal emperors and now stands as a prominent symbol of India's heritage and independence.
-
D.
Jama Masjid, Delhi
Jama Masjid, Delhi is one of India’s largest and most famous mosques, built in the 17th century under Mughal emperor Shah Jahan and renowned for its grand red sandstone and marble architecture.
-
E.
Palace of Assembly, Chandigarh
The Palace of Assembly in Chandigarh is a landmark modernist government building in India, renowned for its bold concrete architecture and symbolic design by Swiss-French architect Le Corbusier.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical observatory
ⓘ
heritage monument ⓘ tourist attraction ⓘ |
| architecturalStyle | observatory architecture ⓘ |
| builder | Maharaja Jai Singh II ⓘ |
| city |
New Delhi, India
ⓘ
surface form:
New Delhi
|
| commissionedBy | Maharaja Jai Singh II ⓘ |
| constructionEnd | 1724 ⓘ |
| constructionStart | 1721 ⓘ |
| coordinateSystem |
altazimuth coordinates
ⓘ
equatorial coordinates ⓘ |
| country | India ⓘ |
| era | Mughal period ⓘ |
| hasPart |
Dakshinottar Bhitti
ⓘ
Niyati Chakra ⓘ
surface form:
Jai Prakash Yantra
Misra Yantra ⓘ Niyati Chakra ⓘ Rama Yantra ⓘ Jantar Mantar, New Delhi self-linksurface differs ⓘ
surface form:
Samrat Yantra
Shanku Yantra ⓘ |
| heritageDesignation | protected monument of national importance in India ⓘ |
| inception | 18th century ⓘ |
| locatedIn |
Delhi
ⓘ
India ⓘ New Delhi, India ⓘ
surface form:
New Delhi
|
| material |
brick
ⓘ
masonry ⓘ stone ⓘ |
| near | Connaught Place ⓘ |
| notableFor | large-scale fixed masonry instruments ⓘ |
| observationMethod | naked-eye observation ⓘ |
| openToPublic | yes ⓘ |
| operator | Archaeological Survey of India ⓘ |
| partOf | series of Jantar Mantar observatories ⓘ |
| purpose |
astrological calculations
ⓘ
astronomical observation ⓘ calendar calculations ⓘ time measurement ⓘ |
| region | National Capital Territory of Delhi ⓘ |
| relatedTo |
Jantar Mantar, Jaipur
ⓘ
Jantar Mantar, Mathura ⓘ Jantar Mantar, New Delhi self-linksurface differs ⓘ
surface form:
Jantar Mantar, Ujjain
Jantar Mantar, Varanasi ⓘ |
| significance |
one of a series of observatories built by Jai Singh II
ⓘ
used for precise naked-eye observations of celestial bodies ⓘ |
| usedFor |
determining declination of celestial objects
ⓘ
measuring local time ⓘ predicting eclipses ⓘ tracking positions of stars and planets ⓘ |
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: Jantar Mantar, New Delhi Description of subject: 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.
Referenced by (21)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
New Delhi
this entity surface form:
Samrat Yantra
this entity surface form:
Jantar Mantar, Ujjain
this entity surface form:
Jantar Mantar, Delhi
this entity surface form:
Jantar Mantar, Delhi
this entity surface form:
Jantar Mantar observatory complex in Delhi
this entity surface form:
Jantar Mantar observatory complex
this entity surface form:
Jantar Mantar observatory, New Delhi
this entity surface form:
Jantar Mantar, Delhi
this entity surface form:
Jantar Mantar observatory, New Delhi
this entity surface form:
Jantar Mantar observatory complex, New Delhi
this entity surface form:
Jantar Mantar grounds, New Delhi
this entity surface form:
Jantar Mantar, Delhi
this entity surface form:
Jantar Mantar, Delhi