Anchor: A group of people on a large boulder all wearing life vests.
Entailed: These people are standing on a large boulder
Contradiction: This group of people wearing life vests are sitting on the dock.
Contradiction: The boy is learning how to color inside the lines.
Contradiction: A person is talking into an amplification device.
Contradiction: Oh, you use New Wave healthcare, not Aetna. 
Contradiction: Congress should consider debt relief for student loans.