4730
Discovered by Adolf Butenandt in 1959 , it was the first pheromone to be characterized chemically .
 person: Adolf Butenandt
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Adolf Butenandt