[Q] Given the sentence "A person wearing a hat and glasses sits on a cliff and smiles." is it true that "The person is not wearing hat."?
[A] A person is either wearing a hat or is not wearing a hat.
The answer is no.

[Q] Premise: "A man with a white shirt is sitting at a table in a room with other people and posters along the blue wall."
Hypothesis: "There are posters on the wall."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
[A] Posters along the wall means the same as posters on the wall.
The answer is yes.

[Q] If "A woman wearing a black shirt smiles as she blow dries her hair." does that mean that "A woman is smiling why she was fixing her hair."?
Options:
- yes
- it is not possible to tell
- no
[A] A woman need not necessarily be smiling while blow-drying her hair.
The answer is it is not possible to tell.