9068
Note that helium-3 , a fermion , also enters a superfluid phase ( at a much lower temperature ) which can be explained by the formation of bosonic Cooper pairs of two atoms ( see also fermionic condensate ) .
 person: Cooper
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: Cooper