Complex sentence: Henry VIII's wives, Anne Boleyn and Catherine Howard were both executed for treason; as adultery, when committed by a queen consort of England, was legally an act of High treason, and punishable by death.
Split into simpler sentences: Henry VIII's wives, Anne Boleyn and Catherine Howard were both executed for treason. Adultery, when committed by a queen consort of England, was legally an act of High treason, and punishable by death.