3092
George Beauchamp 's invention , the Rickenbacker " frying pan " , an electric lap steel guitar produced from 1931 to 1939 , was not only the first electric stringed instrument of any kind , but was the first electric stringed instrument on a commercial recording .
 person: George Beauchamp; organization: Rickenbacker
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: George Beauchamp, Rickenbacker 
Answer:
 person: George Beauchamp; organization: Rickenbacker