23541
Reds , blacks , browns , and ochres are found in cave paintings from the Upper Paleolithic period , but not blue .
 location: Upper Paleolithic
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: Upper Paleolithic 
Answer:
 location: Upper Paleolithic