Question:
Modern shopping malls are usually open 10am-midnight or later, and often on Sunday as well.

Does it follow that "Older shopping malls do not stay open that late. "?
Answer:
it is not possible to tell

Question:
We were so excited to have fooled everybody, said one attendee.

Does it follow that "One attendee said they were thrilled they had the opportunity to participate in such an event."?
Answer:
it is not possible to tell

Question:
A set of stairs connects her room to that occupied by her husband.

Does it follow that "A set of stairs connects her room to her husband's. "?
Answer:
yes

Question:
The neighboring public beach, perfectly acceptable, has, unfortunately, very little shade.

Does it follow that "There aren't many trees at the neighboring beach."?
Answer:
it is not possible to tell