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Sir James Clark Ross took the first sounding in the deep sea in 1840 and Charles Darwin published a paper on reefs and atolls as a result of the second voyage of in 1831 – 6 .
 person: James Clark Ross; person: Charles Darwin
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 Clark Ross, Charles Darwin 
Answer:
 person: James Clark Ross; person: Charles Darwin