Anchor: A woman and a man are playing the guitar while another man is singing.
Entailed: Two people play guitar with someone else singing.
Contradiction: People playing some awful game of karaoke.
Contradiction: It's never been at Holyhead.
Contradiction: Montgomerie's put was over four foot. 
Contradiction: The children are eating turkey sandwiches inside their kitchen that their mothers made.
Contradiction: A possible approach involves the tracking of changes to the estimated completion date for a system.