37809
Within the confines of the Fatah Sagar Lake , there are three small islands. ; the largest of these is the island called the Nehru Park ( 4 km2 area ) , which is a popular garden with a restaurant and a zoo , the second island ( 0.06 km2 area ) houses a public park with an impressive water-jet fountain and the third island ( 1.2 km2 area ) is the address for the Udaipur Solar Observatory ( USO ) .
 Fatah, Udaipur
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Fatah, Udaipur