Anchor: After the break-up of the Mauryan empire, new invaders appeared on the northwest frontier.
Entailed: Invaders popped up on the frontier after the empire's dissolution.
Contradiction: The Mauryan empire continued to exist, easily repelling invaders on its frontier.
Contradiction: A man dragging another man.
Contradiction: There is a man performing on the street.
Contradiction: a man sleeps in his bed
Contradiction: there are requirements and analysis