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.

Example Input: Premise: A little boy dressed in shorts lies on a rock.
Hypothesis: The little boy is sitting in the sun
Update: It is night time.
Example Output: weakener

Example Input: Premise: Two men and a woman running together for a competition.
Hypothesis: The men and woman are teaming up.
Update: They are on a relay team
Example Output: strengthener

Example Input: Premise: A young female wearing a red and white striped shirt, and blue leggings is suspended in air with legs outstretched while holding onto black poles.
Hypothesis: She has a spotter in case she falls.
Update: She is trying the move for the first time.
Example Output:
strengthener