Anchor: He may have found out some months ago, and removed the papers, then  No, by Jove, that won't wash! 
Entailed: He found out several months ago.
Contradiction: Even after all these month's he still didn't know. 
Contradiction: The decline of our annual GDP has caused our nation to tighten its collective belt, thus increasing our average national savings to a higher level than it was 5 decades ago.
Contradiction: When they saw me coming they stopped to watch. 
Contradiction: The girls are taking a math test.
Contradiction: Legal service delivery is measured by this instrument.