30044
Cooling began mid-period , and by the end of the Eocene continental interiors had begun to dry out , with forests thinning out considerably in some areas .
 location: Eocene
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: Eocene 
Answer:
 location: Eocene