Anchor: This relieves the carrier from the need to travel back down a road to serve curbside boxes on the other side
Entailed: This relieves carriers that need to travel back down a road to get to curbside boxes on the opposite side 
Contradiction: Carriers will not be relieved 
Contradiction: A dog is drinking water.
Contradiction: I doubt this approach has been followed well enough to be called a general rule.
Contradiction: An old woman stares out at sea.
Contradiction: a man does a trick