Jantar Mantar, Varanasi
E112189
Jantar Mantar, Varanasi is an 18th-century astronomical observatory in Varanasi, India, featuring masonry instruments built by Maharaja Jai Singh II for precise celestial observations and timekeeping.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Jantar Mantar, Varanasi canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T932820 — 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, Varanasi Context triple: [Jantar Mantar, New Delhi, relatedTo, Jantar Mantar, Varanasi]
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A.
Jantar Mantar, Jaipur
Jantar Mantar, Jaipur is an early 18th-century astronomical observatory in Rajasthan, India, renowned for its large masonry instruments used to measure time and track celestial bodies and recognized as a UNESCO World Heritage Site.
-
B.
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.
-
C.
Tara Mandir Planetarium
Tara Mandir Planetarium is a popular astronomical attraction in Porbandar, India, featuring educational shows and exhibits about space and celestial phenomena.
-
D.
Jama Masjid, Ahmedabad
Jama Masjid in Ahmedabad is a 15th-century mosque renowned for its grand Indo-Islamic architecture and historical significance as one of the city's most important religious and cultural monuments.
-
E.
Jama Masjid, Agra
Jama Masjid in Agra is a 17th-century Mughal-era congregational mosque renowned for its impressive red sandstone and white marble architecture.
- 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, Varanasi Target entity description: Jantar Mantar, Varanasi is an 18th-century astronomical observatory in Varanasi, India, featuring masonry instruments built by Maharaja Jai Singh II for precise celestial observations and timekeeping.
-
A.
Jantar Mantar, Jaipur
Jantar Mantar, Jaipur is an early 18th-century astronomical observatory in Rajasthan, India, renowned for its large masonry instruments used to measure time and track celestial bodies and recognized as a UNESCO World Heritage Site.
-
B.
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.
-
C.
Tara Mandir Planetarium
Tara Mandir Planetarium is a popular astronomical attraction in Porbandar, India, featuring educational shows and exhibits about space and celestial phenomena.
-
D.
Jama Masjid, Ahmedabad
Jama Masjid in Ahmedabad is a 15th-century mosque renowned for its grand Indo-Islamic architecture and historical significance as one of the city's most important religious and cultural monuments.
-
E.
Jama Masjid, Agra
Jama Masjid in Agra is a 17th-century Mughal-era congregational mosque renowned for its impressive red sandstone and white marble architecture.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical observatory
ⓘ
heritage monument ⓘ |
| architect | Maharaja Jai Singh II ⓘ |
| architecturalStyle | functional scientific architecture ⓘ |
| builder | Maharaja Jai Singh II ⓘ |
| city | Varanasi ⓘ |
| coordinateLocation | 25.306°N 83.010°E ⓘ |
| country | India ⓘ |
| culturalContext |
Hindu astronomy
ⓘ
Mughal-era science ⓘ |
| era | early 18th century ⓘ |
| governingBody | Archaeological Survey of India ⓘ |
| hasPart |
equatorial instruments
ⓘ
gnomon ⓘ meridian instruments ⓘ sundial ⓘ zodiacal instruments ⓘ |
| heritageStatus | protected monument ⓘ |
| inception |
18th century
ⓘ
c. 1737 ⓘ |
| languageOfName | Hindi ⓘ |
| locatedIn |
Uttar Pradesh
ⓘ
Varanasi ⓘ |
| locatedNear |
Dashashwamedh Ghat
ⓘ
Ganges River ⓘ
linked to:
Ganges
|
| locatedOn | roof of the Man Mahal palace ⓘ |
| materialUsed |
masonry
ⓘ
plaster ⓘ stone ⓘ |
| namedAfter |
Jantar Mantar observatories
ⓘ
linked to:
Astronomical Observatories of Jai Singh
|
| owner | Government of India ⓘ |
| partOf | network of Jantar Mantar observatories ⓘ |
| purpose |
astrological calculations
ⓘ
astronomical observations ⓘ timekeeping ⓘ |
| region |
North India
ⓘ
linked to:
northern India
|
| relatedTo |
Jantar Mantar, Delhi
ⓘ
linked to:
Jantar Mantar, New Delhi
Jantar Mantar, Jaipur ⓘ Jantar Mantar, Mathura ⓘ Jantar Mantar, Ujjain ⓘ |
| significantEvent | construction under Jai Singh II’s astronomical program ⓘ |
| touristAttraction | yes ⓘ |
| translationOfName | calculation instrument ⓘ |
| usedFor |
calibrating traditional calendars
ⓘ
determining declination of stars ⓘ measuring altitude of celestial bodies ⓘ measuring azimuth of celestial bodies ⓘ measuring local time ⓘ predicting eclipses ⓘ |
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, Varanasi Description of subject: Jantar Mantar, Varanasi is an 18th-century astronomical observatory in Varanasi, India, featuring masonry instruments built by Maharaja Jai Singh II for precise celestial observations and timekeeping.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.