44520
In 1931 , he went to Hankou to work in his father 's shoe manufacturing business whilst continuing his education at night .
 location: Hankou
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: Hankou 
Answer:
 location: Hankou