Anchor: 1996 data promised by end of summer.
Entailed: In 1996, the data was promised by the end of summer.
Contradiction: In every year except 1996, the data was processed by the end of summer.
Contradiction: Street vendor is dancing in the street.
Contradiction: Usps domestic rates for priority and first class mail ate described above. 
Contradiction: I didn't know there was a book titled "A Bridge Over Time."
Contradiction: Increasing the payroll tax improves the finances of the trust fund.