user: Question: Who is h.t. brewer when je armstrong is C.P. Greeks?
Columns: ['W.H. Archer', 'J.E. Armstrong', 'H.L. Birkett', 'F.A. Brill', 'H.T. Brewer']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['R. Cochrane', 'R. Crawford', 'L.L. Davidson', 'H.C. Doney', 'W.C. Drummond']
SQL:

assistant: SELECT "H.T. Brewer" FROM "Table" WHERE "J.E. Armstrong" = 'C.P. Greeks';