Premise: `` Little Boy '' was the codename for the atomic bomb dropped on the Japanese city of Hiroshima on 6 August 1945 during World War II by the Boeing B-29 Superfortress Enola Gay , piloted by Colonel Paul W. Tibbets , Jr. , commander of the 509th Composite Group of the United States Army Air Forces . It was the first atomic bomb to be used in warfare .
Hypothesis: There was an atomic bomb named Little Boy.
Label: ENTAILMENT