Anchor: Since then, Mir's main oxygen system has failed repeatedly (forcing its crew to burn chemical candles to survive), its commander has developed heartbeat irregularities (caused by stress), and a cosmonaut has accidentally unplugged its main computer (which is less powerful than the chip in some cellular phones).
Entailed: The main oxygen system of Mir has had repeated failures.
Contradiction: The main oxygen system of Mir has been remarkably steady and consistent.
Contradiction: A dirt biker is sleeping.
Contradiction: The swimmers in the ocean have surfboards.
Contradiction: I know a lot more about it,
Contradiction: Some humans walking.