Sentence 1: right or the satellite dish

Sentence 2: Not that, and nor the satellite dish.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: Historians have noted that the horsemen are using stirrups, the earliest known example of their use in India.

Sentence 2: Historians noted that stirrups were used by blacksmiths, and not horsemen.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: We wouldn't have this enrichment of our society if it wasn't for slavery.

Sentence 2: If it wasn't for slavery, our society wouldn't be enriched this way.
Is this second sentence entailed by the first?

Answer:
yes