1856
Around this time , she first heard the records of Louis Armstrong and Bessie Smith .
 person: Louis Armstrong; person: Bessie Smith
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: Louis Armstrong, Bessie Smith 
Answer:
 person: Louis Armstrong; person: Bessie Smith