111064
It has been argued that modern neuroimaging techniques will allow researchers to create accurate simulations of the human mind within the 21st century ( ; , ) , thereby overcoming the wager .
 time: 21st century
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: 21st century 
Answer:
 time: 21st century