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.

Q: Premise: Couple strolling hand in hand past shop in city.
Hypothesis: A man and woman are walking on a sidewalk in a shopping mall.
Update: It's cold outside but they are not wearing jackets.

A: strengthener
****
Q: Premise: This is an airplane full of people.
Hypothesis: The people are all refugees.
Update: The people are wearing Disney attire.

A: weakener
****
Q: Premise: A man dressed in blue is wearing a backpack and shades.
Hypothesis: A man wearing only blue underwear, a backpack, and sunglasses.
Update: The man would be served at any gas station.

A:
weakener
****