71021
Meanwhile , in 1843 , James Prescott Joule independently discovered the mechanical equivalent in a series of experiments .
 person: James Prescott Joule
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: James Prescott Joule 
Answer:
 person: James Prescott Joule