Sentence 1: Missed our link to the sidebar recapping the Ravenswood case?

Sentence 2: People who missed the sidebar can find information about it elsewhere.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: Rates vary greatly according to season and availability; many hotels offer special weekend packages, business rates, and promotions.

Sentence 2: Rates are different depending on season and availability, but business rates are offered by many hotels and generally stay at the same price.
Is this second sentence entailed by the first?

Answer: it is not possible to tell

Sentence 1: One important check against any abuse of power by Beijing toward Hong Kong is international attention.

Sentence 2: Beijing abuses its power towards Hong Kong.
Is this second sentence entailed by the first?

Answer:
yes