Anchor: The main building soars 243 m (797 ft), splitting on the 33rd floor into two towers.
Entailed: The building is 797 feet high, and splits into two towers on the 33rd floor.
Contradiction: The building is very short, only standing at about 200 feet high.
Contradiction: The tax increases since 1999 will be doubled.
Contradiction: There are deviant cases in communications research.
Contradiction: People were gathered at a protest.
Contradiction: We would like knowing whether there is personal computer belonging to the household.