Anchor: Still, we certainly don't know that an 11-hour nightly gap in the feeding schedule isn't doing harm.
Entailed: There is no proof that having a gap of 11 hours between feedings won't cause any harm.
Contradiction: An 11 hour gap between feedings has been proven to cause no harm at all.
Contradiction: Two children are eating lunch
Contradiction: The dogs are playing with each other.
Contradiction: We should keep those investments. 
Contradiction: Three ladies are in the sand.