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In 2014 , an 11-year study by University of York , Macquarie University and University of Oxford suggested that artificial mummification occurred 1,500 years earlier than first thought .
 organization: University of York; organization: Macquarie University; organization: University of Oxford
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: University of York, Macquarie University, University of Oxford 
Answer:
 organization: University of York; organization: Macquarie University; organization: University of Oxford