Assertion: tommy gun | /r/HasProperty | invented by john t. thompson
Facets:
value: in 1918
type: TEMPORAL
Source sentences:
text: The Thompson submachine gun is an American submachine gun invented by John T. Thompson in 1918 which became infamous during the Prohibition era, being a signature weapon of various organized crime syndicates in the United States.
text: Nicknamed "The Chicago Typewriter," The Thompson submachine gun is an American submachine gun, invented by John T. Thompson in 1918, that became infamous during the prohibition era.