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.
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Question: Premise: Two girls in red and blowing bubbles with gum.
Hypothesis: One child has challenged another to blow the biggest bubble.
Update: The girls are carefully controlling their breathing to make the bubbles bigger.

Answer: strengthener


Question: Premise: Side view of a female triathlete during the run.
Hypothesis: A woman winning the triathalon
Update: Someone crossed the finish line just before the woman.

Answer: weakener


Question: Premise: A man and children work on the engine of an old truck.
Hypothesis: A man is showing his children how to fix a truck.
Update: The man is using the children's small hands to get at the tight spaces in the engine.

Answer:
weakener