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 biker is racing downhill.
Hypothesis: driving competetion is going on
Update: Police officers on bikes are chasing the person
Example Output: weakener

Example Input: Premise: Two Women carrying cellphones and wearing bright dresses.
Hypothesis: Two women prepare to call  their husbands.
Update: Two women decide to order a pizza.
Example Output: weakener

Example Input: Premise: A male college student wearing a red shirt is looking through a microscope while two of his classmates watch.
Hypothesis: a boy spots jupiter
Update: The boy has discovered a microscopic portal to outer space.
Example Output:
strengthener