instruction:
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.
question:
Premise: An African American man smiling.
Hypothesis: The man is showing his teeth to a doctor.
Update: The man is knocking on a door
answer:
weakener


question:
Premise: Four people are wearing life jackets on a motorboat on still waters.
Hypothesis: The four people are about to compete in a fishing competition.
Update: None of the people have fishing rods.
answer:
weakener


question:
Premise: A man in a red shirt and white shorts is walking behind a man in a white shirt.
Hypothesis: The two men are walking in a park.
Update: They are inside a store.
answer:

weakener