Anchor: I couldn't believe it at the time."
Entailed: At the time, I didn't think it was true.
Contradiction: At the time, I believed it.
Contradiction: A vendor with a red shirt is selling nothing.
Contradiction: A man goes waterskiing.
Contradiction: Political campaigns are entirely self-funded by the candidates. 
Contradiction: LSC has helped improve the effectiveness and efficiency of technological uses.