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The Ford Credit 300 was held July 29 at South Boston Speedway .
 organization: Ford Credit 300; organization: South Boston Speedway
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: Ford Credit 300, South Boston Speedway 
Answer:
 organization: Ford Credit 300; organization: South Boston Speedway