Anchor: A guitarist tuning his electric guitar on the set of what appears to be a television program.
Entailed: A guitarist tunes his electric guitar.
Contradiction: A guitarist is practicing the drums.
Contradiction: There's no need to consider what IT can do for the purposes of screening problematic alcohol use in ED patients.
Contradiction: My cat likes to type, it is funny to see the keystrokes on CompuServe. 
Contradiction: Two people at the seaside.
Contradiction: SCUBA is one of the things responsible for discovering the Sinai.