Anchor: If we can keep the caves hidden, we can cut into their flank again and again, eating away at them.
Entailed: WE can keep the caves hidden, so we can cut into the flank again and again.
Contradiction: We have to put the cave out in the open.
Contradiction: She said that it's a pity.
Contradiction: Yes, if you can get by that problem.
Contradiction: two people are riding bikes on the table
Contradiction: Houston has been playing really well lately