104817
Thanks to the work of Robert Remak and Rudolf Virchow , however , by the 1860 s most biologists accepted all three tenets of what came to be known as cell theory .
 person: Robert Remak; person: Rudolf Virchow
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: Robert Remak, Rudolf Virchow 
Answer:
 person: Robert Remak; person: Rudolf Virchow