Assertion: submachine gun's stock | /r/HasProperty | developed around same time
Facets:
Source sentences:
text: Stocked (with handle) automatic weapons firing pistol rounds were developed around the same time during World War I, by Italy, Germany, and the United States.
text: Stocked (with handle) automatic weapons firing pistol rounds were developed around the same time during World War I, by Italy, Germany, and the United States.