43103
Rising water levels in the Caspian Sea , mainly caused by natural factors exacerbated by man-made structures , have reversed the decades-long drying trend and now threaten coastal areas ; the average level rose 1.5 meters between 1978 and 1993 .
 location: Caspian Sea
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: Caspian Sea 
Answer:
 location: Caspian Sea