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Nylon was first introduced by DuPont around 1939 and was in extremely high demand in the United States , with up to 4 million pairs of stockings bought in one day .
 organization: DuPont; location: United States
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: DuPont, United States 
Answer:
 organization: DuPont; location: United States