Anchor: a PC at the house would really take a lot of the load off
Entailed: A PC at home would make things easier. 
Contradiction: I have a PC at home, which makes things easier. 
Contradiction: A man stands on top of a wall.
Contradiction: Elderly man in the park with friends.
Contradiction: I swim more in summer than winter.
Contradiction: There should be a measure of certainty before anything drastic happens and there are many things involved