19702
In Taiwan , average life expectancy has risen steadily from 55 years in 1951 to 75 today .
 geographical social political: Taiwan; date: 55 years; date: 1951; date: 75
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
 Entities: Taiwan, 55 years, 1951, 75 
Answer:
 geographical social political: Taiwan; date: 55 years; date: 1951; date: 75