Question:
Which employer did Marion Cameron Gray work for in Mar, 1926?

Context:
 Marion Cameron Gray works for University of Edinburgh from Jan, 1926 to Jan, 1927. 
 Marion Cameron Gray works for Imperial College London from Jan, 1927 to Jan, 1930. 
 Marion Cameron Gray works for Bell Labs from Jan, 1934 to Jan, 1967. 
 Marion Cameron Gray works for AT&T Laboratories from Jan, 1930 to Jan, 1934.

Answer:
Question:
Which employer did Marion Cameron Gray work for in Mar, 1926?

Context:
 Marion Cameron Gray works for University of Edinburgh from Jan, 1926 to Jan, 1927. 
 Marion Cameron Gray works for Imperial College London from Jan, 1927 to Jan, 1930. 
 Marion Cameron Gray works for Bell Labs from Jan, 1934 to Jan, 1967. 
 Marion Cameron Gray works for AT&T Laboratories from Jan, 1930 to Jan, 1934.

Answer:
user
University of Edinburgh
assistant
Question:
Which employer did Marion Cameron Gray work for in Mar, 1926?

Context:
 Marion Cameron Gray works for University of Edinburgh from Jan, 1926 to Jan, 1927. 
 Marion Cameron Gray works for Imperial College London from Jan, 1927 to Jan, 1930. 
 Marion Cameron Gray works for Bell Labs from Jan, 1934 to Jan, 1967. 
 Marion Cameron Gray works for AT&T Laboratories from Jan, 1930 to Jan, 1934.

Answer:
user
Bell Labs
AT&T Laboratories
Imperial College London
assistant
Question:
Which employer did Marion Cameron Gray work for in Mar, 1926?

Context:
 Marion Cameron Gray works for University of Edinburgh from Jan, 1926 to Jan, 1927. 
 Marion Cameron Gray works for Imperial College London from Jan, 1927 to Jan, 1930. 
 Marion Cameron Gray works for Bell Labs from Jan, 1934 to Jan, 1967. 
 Marion Cameron Gray works for AT&T Laboratories from Jan, 1930 to Jan, 1934.

Answer:
user
University of Edinburgh
assistant