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: A man in black is talking into the microphone.
Hypothesis: The man is a singer.
Update: The man is in an announcing booth.
Example Output: weakener

Example Input: Premise: A little boy learning how to handle an owl in the outdoors.
Hypothesis: A boy wants a pet owl.
Update: He has an owl theme t-shirt on.
Example Output:
strengthener