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 blond girl sitting on the floor looks up.
Hypothesis: The little girl looks up at her father.
Update: A person hands her lollipop.
Example Output: strengthener

Example Input: Premise: Woman is making a half smile at the camera.
Hypothesis: woman takes selfie
Update: The camera is on the woman's phone.
Example Output: strengthener

Example Input: Premise: The two men practiced using wooden sticks in front of vegetation including palm trees.
Hypothesis: Two humans wielding objects somewhere.
Update: Two humans wielding objects somewhere in their imagination.
Example Output:
weakener