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The stages of sleep were first described in 1937 by Alfred Lee Loomis and his coworkers , who separated the different electroencephalography ( EEG ) features of sleep into five levels ( A to E ) , representing the spectrum from wakefulness to deep sleep .
 person: Alfred Lee Loomis
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 Lee Loomis 
Answer:
 person: Alfred Lee Loomis