Anchor: For a new perspective on the wonders of the deep, all you need is a mask and breathing tube; the fins are optional.
Entailed: If you want to look at the wonders of the deep in a different way, fins are optional, all you need is a breathing tube and a mask.
Contradiction: If you want to look at the wonders of the deep, a mask and breathing tube are optional, but fins are required.
Contradiction: There was no sound from the attic above.
Contradiction: Yup, that's right.
Contradiction: Powell does not want to help anyone with regards to philanthropy. 
Contradiction: People stand near water.