Sentence 1: A hollow cube 110 m (360 ft) high and 106 m (347 ft) wide, it could straddle the Champs-Elysees and tuck Notre-Dame underneath it.

Sentence 2: To the naked eye, the hollow cube appears to be perfectly square, although it is not.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: He chose not to attack Church corruption but instead to preach the values of a Christly life.

Sentence 2: He didn't think attacking Church corruption would be as effective as preaching about a Chirstly life.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Opposite the modern art gallery is the Dean Gallery, occupying a fine Victorian mansion that was once an orphanage.

Sentence 2: Very close, only a few feet away to the modern art gallery is the Dean Gallery
Is this second sentence entailed by the first?

Answer:
it is not possible to tell