102863
Historically , this means that recreation only existed after human society reached the stage where leisure time existed , perhaps during the late stone age ( Upper Paleolithic ) , as shown by the first appearance of cave paintings and musical instruments .
 time: Upper Paleolithic
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Upper Paleolithic 
Answer:
 time: Upper Paleolithic