Anchor: Next, we determine the total cost of delivery performed by the incumbent and a second firm that is assumed to be equally efficient.
Entailed: For the next step we look at both the incumbent's total cost of delivery and that of another firm that we will assume to be just as efficient.
Contradiction: We're just going to focus on determining the incumbent's total cost of delivery.
Contradiction: My food in taste has never really changed and I don't expect it to. 
Contradiction: a referee jumps in at a hockey game
Contradiction: There is only one person present.
Contradiction: Two kids are near each other.