Anchor: A student sitting in a simple classroom appears deep in thought.
Entailed: A student thinking in a classroom.
Contradiction: A student eating during lunchtime.
Contradiction: Unbalanced individuals are actually more likely than most to interpret things sanely, objectively, and with no shortage of insight.
Contradiction: The EPA wants to limit mercury emissions from utilities.
Contradiction: We try to cut as much from the budget as possible. 
Contradiction: Group of people playing rollerskate tag.