Text: But now, as I strolled out on the lawn, still nursing a grudge against my friend's high-handedness, I saw Lawrence on the croquet lawn, aimlessly knocking a couple of very ancient balls about, with a still more ancient mallet.
Entailment: I spotted Lawrence thwacking several old balls around with an ancient mallet.
Contradiction: I strolled across the lawn but Lawrence was nowhere to be seen.