Text: By the fourth century b.c. the Babylonians had been overthrown, and the Israelites returned to their land, which was now under the more tolerant rule of the Persians.
Entailment: The Babylonians were not as tolerant as the Persians towards the Israelites who returned to their land.
Contradiction: The Israelites never had the opportunity to return to their homeland and the Babylonians remained in power.