Anchor: A historian and his friend digging in the mines to look for more fossils for study.
Entailed: the historian and his friend are digging for fossils to study.
Contradiction: the historian and his friend are at a party.
Contradiction: The rules have been the same.
Contradiction: the girl is wet
Contradiction: A man and a dog on a path.
Contradiction: The man can barely see the man with the red hat.