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: Two hockey players trying to score in their opponents goal.
Hypothesis: two hockey players are looking for the puck
Update: The two hockey players pass the puck back and forth.

A: weakener
****
Q: Premise: People in speed rafts drive in the water.
Hypothesis: People are racing.
Update: The rafts are travelling in opposite directions.

A: weakener
****
Q: Premise: Several brown dogs playing with a tennis ball in a grassy field.
Hypothesis: dogs playing with a ball they just found
Update: A dog across the park is sad that he lost his ball.

A:
strengthener
****
