Anchor: Both gold and silver are sold by weight with relatively little extra cost for workmanship, so they represent good value.
Entailed: Weight determines the cost of gold and silver.
Contradiction: The price of gold and silver varies wildly with the workmanship of a piece.
Contradiction: The man has a car.
Contradiction: They are near the red door.
Contradiction: The Indians retired and left the British in charge. 
Contradiction: A woman with dark hair sits.