Anchor: A snowboarder goes up a ramp.
Entailed: There is a person with a snowboard on the ramp.
Contradiction: A snowboarder sits on the ski lift.
Contradiction: I know my mom only had one sibling.
Contradiction: There are aliens who were legal residents of the United States.
Contradiction: A man is naked in the snow, being cuffed for indecent exposure.
Contradiction: I asked my grandpa what his reasons for inventing the language were.