Sentence 1: Inside, there was no reason either for local Giovanni Pisano to show false modesty about his superbly sculpted 14th-century marble pulpit (left aisle), arguably the cathedral's masterpiece.

Sentence 2: Giovanni Pisano's favorite sculpture in the cathedral is the superbly sculpted marble pulpit.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Think about seedless grapes or navel oranges--if there are no seeds, where did they come from?

Sentence 2: Do seedless grapes and naval oranges come from human intervention?
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: At one point, West quotes Du Bois--with no sense of irony--to the effect that we must have honest men or we die.

Sentence 2: Du Bois expressed that we must have honest men or death.
Is this second sentence entailed by the first?

Answer:
yes