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The idea of dinosaurs as ectothermic remained a prevalent view until Robert T. " Bob " Bakker , an early proponent of dinosaur endothermy , published an influential paper on the topic in 1968 .
 person: Robert T. " Bob " Bakker
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 T. " Bob " Bakker 
Answer:
 person: Robert T. " Bob " Bakker