Anchor: This involves a morning or afternoon of theory and shallow-water work, giving you an opportunity to try out the basic techniques before committing yourself a full open-water course.
Entailed: This gives you a chance to test foundational methods before a commitment to a full open water course.
Contradiction: You won't get a chance to try out basic techniques with theory or anything.
Contradiction: Everyone prefers to be out in the afternoon heat instead of the cool evenings.
Contradiction: We weren't informed of the reason why these people had fallen out.
Contradiction: Several dogs sniff the trees in a park.
Contradiction: Back in the early 80's, the Mets were just a bunch of young kids not trained up yet.