Assertion: submachine gun | /r/HasProperty | invented
Facets:
value: during world war i
type: TEMPORAL
Source sentences:
text: The submachine gun was invented during World War I (1914-1918) but the apex of its use was during World War II (1939-1945) when millions of the weapon type were manufactured.
text: The submachine gun was invented during World War I (1914–1918).
text: The submachine gun was invented during World War I, but the apex of its use was during World War II, when millions of the weapon type were manufactured.
text: The submachine gun was invented during World War I (1914–1918), but the zenith of its use was World War II (1939–1945) when millions of weapons of this type were manufactured.