Anchor: If you have never scuba-dived before, each dive center is registered by the Greek government to offer training in addition to dive supervision for qualified divers.
Entailed: There are dive centers that are registered by the Greek government.
Contradiction: Dive centers are not registered by the Greek government.
Contradiction: Two men not touching up graffiti
Contradiction: People are near the river.
Contradiction: Tours start on the outside.
Contradiction: A young man in white is midair