Anchor: To do it yourself, or charter  bareboat,  you'll need to demonstrate proficiency.
Entailed: You have to be able to show competency in order to do it yourself.
Contradiction: There are no requirements either to do it yourself or charter bareboat.
Contradiction: I get some fresh air in the house and it is terrible.
Contradiction: Tommy decided to hide out of sight.
Contradiction: The patient didn't try to sleep.
Contradiction: The CIO's are trying to meet the standards.