Assertion: artillery's gun | /r/Synonym | atomic annie
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Source sentences:
text: In 1953, school personnel fired the first nuclear-capable fieldartillery gun (the 280mm gun known as Atomic Annie) at Frenchman's Flat, Nevada.
text: Shortly thereafter, gunners ushered in the tactical nuclear era when, in May 1953, a 280-mm gun called "Atomic Annie" fired the first nuclear shell downrange.
text: In 1953, school personnel fired the first nuclear-capable fieldartillery gun (the 280mm gun known as Atomic Annie) at Frenchman's Flat, Nevada.