Anchor: A huge unfinished obelisk lies prone but not free from the face.
Entailed: The unfinished obelisk is not free from the face.
Contradiction: A tiny obelisk is free from the face.
Contradiction: A diminutive obelisk stands erect and completed.
Contradiction: No one has ever built anything to commemorate the event.
Contradiction: The group of people are outside.
Contradiction: These islands are not so attractive.