81439
In 1891 , the population was about 760 but it declined quickly ; many people had left by the time that the mines closed , but the last inhabitant , George Hood , remained until 1954 .
 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