Anchor: Two other articles--urging Nixon's impeachment for concealing the bombing of Cambodia and for tax evasion--went down to defeat
Entailed: Nixon hide the bombing of Cambodia and his tax evasion from the public. 
Contradiction: Nixon never bombed Cambodia nor evaded his taxes.
Contradiction: We can't possibly do this.
Contradiction: On the corner is a silver parked car in the street near the buidlings.
Contradiction: We have never taken our five year old camping.
Contradiction: KDPI hideouts in northern Iraq were raided this summer.