Anchor: with filters and all that stuff that they have now i mean they're almost maintenance free
Entailed: Filters these days make them virtually maintenance free.  
Contradiction: Filters make them prone to higher maintenance.  
Contradiction: A man playing the drums.
Contradiction: I don't know how they fixed the problem, but they were focused on measuring and recording and reducing down time.
Contradiction: Kim walks to the bus stop over the mountain.
Contradiction: A biker jumping.