Anchor: Here's the  They are both heavy smokers and have managed in three months to smell up the rest of the building.
Entailed: The two heavy smokers stink up the rest of the building in three (3) months. 
Contradiction: Everyone knows that smoking does not leave an odor
Contradiction: A woman is using a megaphone.
Contradiction: The day consists of a religious service followed by a celebration.
Contradiction: What is happening is obvious.
Contradiction: The power digger changed ditch-digging so not as much labor effort is needed.