18448
When the BBC started the world 's first practical television service with experimental transmissions in 1936 one of the types of programmes it produced were variety shows with circus artists .
 organization: BBC
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: BBC 
Answer:
 organization: BBC