Question: The Charlton Automatic Rifle was to act as a substitute for what First World War-era light machine gun of US design?
Sentence (from "Charlton Automatic Rifle"): The Charlton Automatic Rifle was a fully automatic conversion of the Lee–Enfield rifle, designed by New Zealander Philip Charlton in 1941 to act as a substitute for the Bren and Lewis gun light machine guns which were in chronically short supply at the time.
Relevant evidence: Yes