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. It makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis. It makes you much more likely to believe the hypothesis is true. Your task is to output 'strengthener' or 'weakener' if the update strengths or weakens the hypothesis, respectively.

[Q]: Premise: PersonX begins to work
Hypothesis: PersonX is seen as on task
Update: PersonX stares at a blank computer screen.
[A]: weakener


[Q]: Premise: PersonX throws it on the floor
Hypothesis: Because PersonX wanted to make the water balloon pop
Update: PersonX thought it was a regular ball.
[A]: weakener


[Q]: Premise: PersonX drops PersonY's arms
Hypothesis: Before, PersonX needed to grab onto PersonY
Update: PersonY escapes an oncoming train.
[A]:
strengthener