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A. L. Williams ( born March 11 , 1934 ) is the former head football coach for the Northwestern State Demons and the Louisiana Tech Bulldogs .
 person: L. Williams; organization: Northwestern State Demons; organization: Louisiana Tech Bulldogs
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: L. Williams, Northwestern State Demons, Louisiana Tech Bulldogs 
Answer:
 person: L. Williams; organization: Northwestern State Demons; organization: Louisiana Tech Bulldogs