31706
signal , detected in 1977 by a SETI project , remains a subject of speculative debate .
 organization: SETI
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: SETI 
Answer:
 organization: SETI