Context: Jantar Mantar located in Connaught Place was built by Maharaja Jai Singh II of Jaipur. It consists of 13 architectural astronomy instruments. The primary purpose of the observatory was to compile astronomical tables, and to predict the times and movements of the sun, moon and planets.

Question: Who was responsible for constructing the Jantar Mantar?
Answer: Maharaja Jai Singh II of Jaipur

Question: In what area of New Delhi is the Jantar Mantar observatory located?
Answer: Connaught Place

Question: The Jantar Mantar consists of how many architectural astronomy instruments?
Answer: 13

Question: What is one of the primary purposes of the Jantar Mantar observatory?
Answer: compile astronomical tables

Question: What is the name of the observatory built in Connaught Place by Maharaja Jai Singh II of Jaipur?
Answer: Jantar Mantar