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: Salvation Army members in uniform, one with a musical instrument, stand outside a store in a small group.
Hypothesis: The instrument is a trumpet
Update: One of the members holds a round instrument and sticks.
Example Output: weakener

Example Input: Premise: A bright wall painting on the street.
Hypothesis: A mural of a sunset.
Update: An onlooker remarks 'Lovely, reminds me of nights in Daytona'
Example Output: strengthener

Example Input: Premise: A woman with a pink coat and three girls all with blue bags are shopping.
Hypothesis: A family is going to buy things and use their bags.
Update: The items are put in bags so they are easier to carry.
Example Output:
strengthener