Question:
Which employer did Francis Albarède work for in Jul, 1977?

Context:
 Francis Albarède works for École nationale supérieure de géologie from Jan, 1979 to Jan, 1991. 
 Francis Albarède works for California Institute of Technology from Jan, 1977 to Jan, 1978. 
 Francis Albarède works for École normale supérieure  (Paris) from Jan, 1991 to Jan, 2015.

Answer:
Question:
Which employer did Francis Albarède work for in Jul, 1977?

Context:
 Francis Albarède works for École nationale supérieure de géologie from Jan, 1979 to Jan, 1991. 
 Francis Albarède works for California Institute of Technology from Jan, 1977 to Jan, 1978. 
 Francis Albarède works for École normale supérieure  (Paris) from Jan, 1991 to Jan, 2015.

Answer:
user
California Institute of Technology
assistant
Question:
Which employer did Francis Albarède work for in Jul, 1977?

Context:
 Francis Albarède works for École nationale supérieure de géologie from Jan, 1979 to Jan, 1991. 
 Francis Albarède works for California Institute of Technology from Jan, 1977 to Jan, 1978. 
 Francis Albarède works for École normale supérieure  (Paris) from Jan, 1991 to Jan, 2015.

Answer:
user
École normale supérieure  (Paris)
École nationale supérieure de géologie
assistant
Question:
Which employer did Francis Albarède work for in Jul, 1977?

Context:
 Francis Albarède works for École nationale supérieure de géologie from Jan, 1979 to Jan, 1991. 
 Francis Albarède works for California Institute of Technology from Jan, 1977 to Jan, 1978. 
 Francis Albarède works for École normale supérieure  (Paris) from Jan, 1991 to Jan, 2015.

Answer:
user
California Institute of Technology
assistant