7000
He rose to the rank of chief steward and served for seven years as the head of his department in the naval ship “ the man-of-war .
 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