161505
Significance The Narmada River ( also called the Rewa , from its leaping motion ( from the root rev through its rocky bed ) where the Banalinga stones are found , has been mentioned by Ptolemy and the author of the Periplus .
 person: Ptolemy
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Ptolemy 
Answer:
 person: Ptolemy