73547
Some economists , such as Thomas Sowell and Walter E. Williams , have argued that poverty and famine are caused by bad government and bad economic policies , not by overpopulation .
 person: Thomas Sowell; person: Walter E. Williams
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Thomas Sowell, Walter E. Williams 
Answer:
 person: Thomas Sowell; person: Walter E. Williams