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In 1922 , Alfred J. Lotka proposed that natural selection might be understood as a physical principle that could be described in terms of the use of energy by a system , a concept later developed by Howard T. Odum as the maximum power principle in thermodynamics , whereby evolutionary systems with selective advantage maximise the rate of useful energy transformation .
 person: Alfred J. Lotka; person: Howard T. Odum
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: Alfred J. Lotka, Howard T. Odum 
Answer:
 person: Alfred J. Lotka; person: Howard T. Odum