Anchor: The key to effectively addressing these challenges is to ensure that long-standing modernization management and technical weaknesses are corrected before IRS invests large sums of modernization funds.
Entailed: Technical weaknesses should be corrected before the IRS invests in large sums of modernization funds.
Contradiction: There is nothing to correct before the IRS invests in large sums of modernization funds.
Contradiction: The dog is running in the sun.
Contradiction: Julius is under the impression that you're all wrong about that photograph of Jane. 
Contradiction: Announcements were made over the telephone.
Contradiction: That can be fixed for less, but I won't get that price.