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 young boy in a black jacket is running towards a woman with outstretched arms.
Hypothesis: A young boy runs to his mother for a hug.
Update: The boy calls the woman 'Mommy'
Example Output: strengthener

Example Input: Premise: A boy wearing a green shirt on a bicycle reflecting off a store window.
Hypothesis: The boy is stopped on his bike.
Update: The boy is talking to the store owner.
Example Output: strengthener

Example Input: Premise: Elderly man opening up a gift in a living room setting with a younger relative nearby.
Hypothesis: The man was given a gift by his younger relative.
Update: The younger relative asked the old man how long he's had the gift.
Example Output:
weakener