Anchor: If that is the goal, he thought we should be examining how to accomplish screening.
Entailed: We probably should be examining how to accomplish screening based on the goal.
Contradiction: If that is the goal, we should be focused on participation. 
Contradiction: The prehistoric cave drawings are poorly-preserved and generally dismissed.
Contradiction: The crowd is large
Contradiction: The child is alone playing in his playroom.
Contradiction: The tennis player is currently playing a game of tennis.