57417
In jazz , bassists Oscar Pettiford and Harry Babasin were among the first to use the cello as a solo instrument ; both tuned their instrument in fourths , an octave above the double bass .
 person: Oscar Pettiford; person: Harry Babasin
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: Oscar Pettiford, Harry Babasin 
Answer:
 person: Oscar Pettiford; person: Harry Babasin