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In 1960 , the San Diego school board told him that he could not play a scheduled concert at a high school unless he signed an oath pledging that the concert would not be used to promote a communist agenda or an overthrow of the government .
 location: San Diego
Please list all entity words in the text that fit the category.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} 
Answer:
 location: San Diego