Question:
Which employer did Elbert Frank Cox work for in May, 1918?

Context:
 Elbert Frank Cox works for United States Army from Jan, 1918 to Jan, 1919. 
 Elbert Frank Cox works for West Virginia State University from Jan, 1925 to Jan, 1929. 
 Elbert Frank Cox works for Howard University from Jan, 1928 to Jan, 1966. 
 Elbert Frank Cox works for Shaw University from Jan, 1919 to Jan, 1921.

Answer:
Question:
Which employer did Elbert Frank Cox work for in May, 1918?

Context:
 Elbert Frank Cox works for United States Army from Jan, 1918 to Jan, 1919. 
 Elbert Frank Cox works for West Virginia State University from Jan, 1925 to Jan, 1929. 
 Elbert Frank Cox works for Howard University from Jan, 1928 to Jan, 1966. 
 Elbert Frank Cox works for Shaw University from Jan, 1919 to Jan, 1921.

Answer:
user
United States Army
assistant
Question:
Which employer did Elbert Frank Cox work for in May, 1918?

Context:
 Elbert Frank Cox works for United States Army from Jan, 1918 to Jan, 1919. 
 Elbert Frank Cox works for West Virginia State University from Jan, 1925 to Jan, 1929. 
 Elbert Frank Cox works for Howard University from Jan, 1928 to Jan, 1966. 
 Elbert Frank Cox works for Shaw University from Jan, 1919 to Jan, 1921.

Answer:
user
Shaw University
West Virginia State University
Howard University
assistant
Question:
Which employer did Elbert Frank Cox work for in May, 1918?

Context:
 Elbert Frank Cox works for United States Army from Jan, 1918 to Jan, 1919. 
 Elbert Frank Cox works for West Virginia State University from Jan, 1925 to Jan, 1929. 
 Elbert Frank Cox works for Howard University from Jan, 1928 to Jan, 1966. 
 Elbert Frank Cox works for Shaw University from Jan, 1919 to Jan, 1921.

Answer:
user
United States Army
assistant