158682
Other affected members of the injured touring party include Bill Laws , a Physics PhD who happens to be a Negro , who happens to be employed as a tour guide within the plant .
 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