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In 1968 , they were signed by Elektra Records after the company 's president Jac Holzman saw them perform .
 organization: Elektra Records; person: Jac Holzman
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: Elektra Records, Jac Holzman 
Answer:
 organization: Elektra Records; person: Jac Holzman