7854
For the next two decades he continued to act periodically in other television series , including the NBC drama " Gibbsville " in 1976 .
 organization: NBC
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: NBC 
Answer:
 organization: NBC