62669
Meanwhile , DuPont , the chemical giant , is attempting to figure out how to construct a bio-refinery fueled by corn stover - the stalk and leaves that are left in the field after farmers harvest their crop .
 organization: DuPont
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 
Answer:
 organization: DuPont