11718
" By 1966 , some 100 million Americans were observing DST based on their own local laws and customs .
 person: some 100 million Americans; person: their
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
 Entities: some 100 million Americans, their 
Answer:
 person: some 100 million Americans; person: their