Anchor: A man in a welding mask welds a girder.
Entailed: The man is wearing a welding mask.
Contradiction: The man is wearing a surgeon's mask.
Contradiction: The uniforms are red.
Contradiction: Oh yes, that would be very convenient. 
Contradiction: To News Quiz participants, Wal-Mart means artisan crafts and hard-to-obtain firearms.
Contradiction: Donations like this are not recognized as revenue.