91453
Harry Harlow conducted a controversial study involving rhesus monkeys and observed that monkeys reared with a " terry cloth mother " , a wire feeding apparatus wrapped in softer terry cloth which provided a level of tactile stimulation and comfort , were considerably more emotionally stable as adults than those with a mere wire mother .
 person: Harry Harlow; animal: rhesus monkeys
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: Harry Harlow, rhesus monkeys 
Answer:
 person: Harry Harlow; animal: rhesus monkeys