T | F |

F | T |

- The negation of ``the sun shines this morning'' is ``the sun does not shine this morning'.
- The negation of ``every cat has a long tail'' is ``at least one cat has not a long tail''. This includes both the case where the specific cat has no tail at all and the case where the cat has a short tail. The negation of ``No car has only three wheels'' is ``there exists at least one car which has only three wheels''.

root 2002-06-10