Anchor: The system stretches up to 16 km (10 miles) inland and includes Green Grotto, a vast cavern with an underground lake where stalactites are clearly reflected in the glassy water.
Entailed: There is an underground lake in the Green Grotto cavern.
Contradiction: The system stretches at least 20 miles inland.
Contradiction: There is tons of trust 
Contradiction: A group of men are eating.
Contradiction: a man watching a plane
Contradiction: Most people would if it isn't a big problem.