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Though efforts to reduce environmental levels of lead were initially slowed down by the lead industry , the emergence of Clair Patterson in the 1960 s would lead to more meaningful changes .
 person: Clair Patterson
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: Clair Patterson 
Answer:
 person: Clair Patterson