Question: Which aircraft designer was born in Frankfurt am Main and had a model produced by Bayerische Flugzeugwerke?
Sentence (from "BFW M.19"): The BFW M.19, sometimes known as the Messerschmitt M 19, was the first in a line of German low-wing single-engine sports planes, designed by Willy Messerschmitt while he worked for Bayerische Flugzeugwerke (BFW).
Relevant evidence: No