TASK DEFINITION: In this task, you are given a premise, a hypothesis, and an update. The premise sentence describes a real-world situation and is always assumed to be true. The hypothesis sentence describes an assumption or inference that you might make about that situation having read the premise. The update provides additional information about the situation that might weaken or strengthen the hypothesis. A weakener is a statement that weakens the hypothesis, that is, it makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis, that is, it makes you much more likely to believe the hypothesis is true. Your task is to answer with 'strengthener' or 'weakener' if the update strengthens or weakens the hypothesis, respectively.
PROBLEM: Premise: a person lying outside reading a book during the day.
Hypothesis: A student studies outside on a sunny day.
Update: The person is wearing sunblock.

SOLUTION: strengthener

PROBLEM: Premise: Man in plaid shirt scaling rocks.
Hypothesis: A man is mountain climbing.
Update: The man has a small ice axe with him

SOLUTION: strengthener

PROBLEM: Premise: A woman walks in front of a movie advertisement.
Hypothesis: The woman is at a movie theater.
Update: There is a person in a booth taking tickets.

SOLUTION:
strengthener