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: Two blond women are smiling while one is holding a camera to capture their image.
Hypothesis: Two women taking a selfie on the beach.
Update: The women are wearing bikinis.
Example Output: strengthener

Example Input: Premise: A man in a striped shirt selling green and yellow melon out of the back of a pick up.
Hypothesis: A farmer wearing his farm's logo shirt is selling fresh fruit throughout the summer harvest season.
Update: It's sunnyoutside.
Example Output: strengthener

Example Input: Premise: A couple is posing for a picture outside.
Hypothesis: Two people are posing for photos to send out to friends.
Update: The couple are posing for a photo on a polaroid instant camera.
Example Output:
weakener