Anchor: Scientists are now convinced that a vast internal ocean is, or was recently, roiling the surface and providing the heat and chemicals necessary to create life.
Entailed: A vast internal ocean roiling the surface.
Contradiction: Scientists are not convinced that a vast internal ocean is roiling the surface.
Contradiction: the people are indoors sitting
Contradiction: A young girl and an adult are on the playground
Contradiction: I was too scared to even consider running.
Contradiction: I'd like to go with those same adjectives