Assertion: gun's number | /r/HasProperty | the madsen machine gun
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Source sentences:
text: Submachine guns (e.g., the German MP 18) as well as lighter machine guns (the first light machine gun deployed in any significant number being the Madsen machine gun, with the Chauchat and Lewis gun soon following) saw their first major use in World War I, along with heavy use of large-caliber machine guns.