TASK DEFINITION: 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.
PROBLEM: 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.

SOLUTION: weakener

PROBLEM: Premise: A young boy in red swim shorts playing with sand on a beach.
Hypothesis: A boy is building a sandcastle.
Update: He uses a shovel to dig a moat.

SOLUTION: strengthener

PROBLEM: Premise: a large lake with a lone duck swimming in it with several people around the edge of it.
Hypothesis: The duck is looking for food.
Update: The duck gets food but still comes looking for more.

SOLUTION:
strengthener