287235
The gunner was sat in a large cockpit in the nose of the aircraft , with a rotating mount for the cannon and an armoured floor claimed to be bulletproof , while the pilot sat in a cockpit behind the wings , so that the pilot and gunner could not communicate .
 None
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:  
Answer:
 None