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.

Ex Input:
Premise: A diver swims past a school of colorful fish.
Hypothesis: The diver is a scientist studying fish.
Update: The diver has a camera and notes.

Ex Output:
strengthener


Ex Input:
Premise: The bride is standing outside.
Hypothesis: The bride is about to walk down the aisle in her outdoor wedding.
Update: The bride's hair and makeup aren't done.

Ex Output:
weakener


Ex Input:
Premise: A toddler boy in a red tank top and khaki shorts walks on the European street with a woman in a white top and faded blue jeans.
Hypothesis: a mom and boy walk together in italy
Update: Behind them the Eiffel Tower is lit up.

Ex Output:

weakener