Premise: Nathan Heard (November 7, 1936 – March 16, 2004), sometimes known as Nathan C. Heard, was a best-selling author in the United States, noted for the grim realism of his novels. He is also known as one of the forefathers of street and prison literatures, having written his most famous book, "Howard Street" (1968), while serving time in the Trenton State Penitentiary for armed robbery.
Hypothesis: Nathan Heard served time in the Trenton State Penitentiary for armed robbery.in the year   1968