Anchor: Studies of implementation of screening programs in ED clinical practice should be undertaken.
Entailed: Screening programs in ED clinical practice should be undertaken.
Contradiction: Studies of implementation of screening programs in AF clinical practice should be undertaken.
Contradiction: I already know how I'm going to start it. 
Contradiction: A girl is holding a camera.
Contradiction: The people are a part of a native tribe mending their fishing nets.
Contradiction: Thorn kept his weapon on his body.