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 man holding a camera on a beach.
Hypothesis: The man is wearing shorts.
Update: He's in Mexico.
Example Output: strengthener

Example Input: Premise: People in speed rafts drive in the water.
Hypothesis: People are racing.
Update: The rafts are travelling in opposite directions.
Example Output: weakener

Example Input: Premise: Picture of a band performing in front of fans, one on drums, three guitars and a keyboard player.
Hypothesis: Muscians are making music.
Update: The fans are screaming in enjoyment
Example Output:
strengthener