[["It's an American phrase, attributing its origin to Dear John letters sent during World War 2. Soldiers joked while comparing letters from lovers: one being a pages-long good-bye letter, one consisting of a few sentences, and one simply saying \u201cDear John.\" The punchline being, \u201cThat\u2019s all she wrote.\u201d", 36.0], ["It's from a 2010 hip hop song sung by T.i. featuring Eminem.", 1.0]]
where does the saying that's all she wrote come from
literature