37529
DuPont had deviated from the Metallurgical Laboratory 's original design in which the reactor had 1,500 tubes arranged in a circle , and had added 504 tubes to fill in the corners .
 organization: DuPont; organization: Metallurgical Laboratory
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: DuPont, Metallurgical Laboratory 
Answer:
 organization: DuPont; organization: Metallurgical Laboratory