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Throughout the 1970 s , Irv Teibel released his psychoacoustic " Environments series " , which consisted of 30-minute , uninterrupted environmental sound and synthesized soundscapes ( " Om Chant " and " Tintinnabulation " ) .
 person: Irv Teibel
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: Irv Teibel 
Answer:
 person: Irv Teibel