Assertion: tommy gun | /r/HasProperty | john t. thompson
Facets:
Source sentences:
text: Thompson submachine gun, byname Tommy gun, submachine gun patented in 1920 by its American designer, John T. Thompson.
text: America brought us flapper dresses, the Prohibition era… and the Thompson submachine gun (‘Tommy gun’ for short), patented by the American designer, John T. Thompson.