Anchor: In 1991, the National Research Council studied the issue and reported that as computer systems become more prevalent, sophisticated, embedded in physical processes, and interconnected, society becomes more vulnerable to poor system design, accidents that disable systems, and attacks on computer systems.
Entailed: The national research council studied the issue in 1991.
Contradiction: The national research council ignored the issue. 
Contradiction: She never said anything.
Contradiction: A woman and a tree in the mountains.
Contradiction: A cat is running down a dark alley.
Contradiction: This other amount of money is placed with the credit union, and it looks good if we want to go on a vacation or something similar.