13955
In the first season ( 1971 – 1972 ) , a number of unbilled children were also used on-camera with the show 's cast , as on " Sesame Street " , but this concept was quickly dropped .
 None
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:  
Answer:
 None