644
what ' s believed to be the terror cell responsible for 9 / 11 .
 organization: what; organization: the terror cell responsible for 9 / 11
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 organization: what; organization: the terror cell responsible for 9 / 11