28537
At the DFP factory , in 1913 , he noticed an aluminium paperweight and thought that aluminium might be a suitable replacement for cast iron to fabricate lighter pistons .
 organization: DFP
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: DFP 
Answer:
 organization: DFP