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.

Premise: Two men playing ultimate Frisbee.
Hypothesis: Two guys are playing with a yellow Frisbee.
Update: The frisbee matches some tulips under a tree.
strengthener

Premise: Black man working on a plywood stage.
Hypothesis: A man is cleaning the theater
Update: The man is holding a mop next to a bucket of soapy water.
strengthener

Premise: A team of men, three in red shirts and two others in baseball jerseys, re-surface a baseball diamond with specialized tools.
Hypothesis: A grounds crew maintain a park.
Update: They're at an old, run-down field.

strengthener