Anchor: so the Serger is not a sewing machine itself it's something that goes with it
Entailed: Serger isn't a sewing machine but something that adds to it.
Contradiction: Serger is a sewing machine.
Contradiction: I cannot believe you have never cooked before.
Contradiction: Two people play instruments outside on the street.
Contradiction: There is no name for this procedure.
Contradiction: We will wake at midday and write 1,000 words.