18655
Based on historical rates of return , Mr. Anderson reckons a 100 % stock portfolio , indexed to the market , would have kept up with tuition and taxes in the 20th century .
 person: Anderson; percent: 100 %; date: the 20th century
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: Anderson, 100 %, the 20th century 
Answer:
 person: Anderson; percent: 100 %; date: the 20th century