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Since the 1990 s , SO emissions have dropped 40 % , and according to the Pacific Research Institute , acid rain levels have dropped 65 % since 1976 .
 organization: Pacific Research Institute
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: Pacific Research Institute 
Answer:
 organization: Pacific Research Institute