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John Skilling ( October 8 , 1921 , Los Angeles , California – March 5 , 1998 , Seattle , Washington ) was a civil engineer and architect , best known for being the chief structural engineer of the World Trade Center .
 person: Skilling; location: Los Angeles; location: California; location: Seattle
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: Skilling, Los Angeles, California, Seattle 
Answer:
 person: Skilling; location: Los Angeles; location: California; location: Seattle