50439
They are volcanic in origin , the peaks of volcanoes which were active in Pleistocene times .
 location: Pleistocene
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: Pleistocene 
Answer:
 location: Pleistocene