Anchor: Scientists are forever seeking new solutions for propping it up, but at its present rate of slippage, you still have at least another 200 years to see it standing more or less upright.
Entailed: Scientists are continually trying to find solutions to save it from slipping over completely.
Contradiction: The architecture is so well made that it will probably remain standing for the remainder of human civilisation. 
Contradiction: The man is lying in bed
Contradiction: What are your thoughts on the Raiders.
Contradiction: A child playing video games.
Contradiction: Cyclists are riding their bikes on a clear day.