Complex sentence: Performances of the Coventry Plays are first recorded in a document of 1392-3, and continued for nearly two centuries; the young Shakespeare almost certainly witnessed them before they were finally suppressed in 1579.
Split into simpler sentences: Performances of the Coventry Plays are first recorded in a document of 1392-3, and continued for nearly two centuries. The young Shakespeare almost certainly witnessed them before they were finally suppressed in 1579.