Question:
Which employer did Wallace Berry work for in Dec, 1956?

Context:
 Wallace Berry works for University of British Columbia from Jan, 1978 to Jan, 1984. 
 Wallace Berry works for University of Southern California from Jan, 1956 to Jan, 1957. 
 Wallace Berry works for University of Michigan from Jan, 1957 to Jan, 1977. 
 Wallace Berry works for Society for Music Theory from Jan, 1977 to Jan, 1985.

Answer:
Question:
Which employer did Wallace Berry work for in Dec, 1956?

Context:
 Wallace Berry works for University of British Columbia from Jan, 1978 to Jan, 1984. 
 Wallace Berry works for University of Southern California from Jan, 1956 to Jan, 1957. 
 Wallace Berry works for University of Michigan from Jan, 1957 to Jan, 1977. 
 Wallace Berry works for Society for Music Theory from Jan, 1977 to Jan, 1985.

Answer:
user
University of Southern California
assistant
Question:
Which employer did Wallace Berry work for in Dec, 1956?

Context:
 Wallace Berry works for University of British Columbia from Jan, 1978 to Jan, 1984. 
 Wallace Berry works for University of Southern California from Jan, 1956 to Jan, 1957. 
 Wallace Berry works for University of Michigan from Jan, 1957 to Jan, 1977. 
 Wallace Berry works for Society for Music Theory from Jan, 1977 to Jan, 1985.

Answer:
user
Society for Music Theory
University of British Columbia
University of Michigan
assistant
Question:
Which employer did Wallace Berry work for in Dec, 1956?

Context:
 Wallace Berry works for University of British Columbia from Jan, 1978 to Jan, 1984. 
 Wallace Berry works for University of Southern California from Jan, 1956 to Jan, 1957. 
 Wallace Berry works for University of Michigan from Jan, 1957 to Jan, 1977. 
 Wallace Berry works for Society for Music Theory from Jan, 1977 to Jan, 1985.

Answer:
user
University of Southern California
assistant