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.

Example Input: Premise: Outside by the trees, a woman wearing jeans and red jacket throws something for a German shepherd to chase.
Hypothesis: A young lady is teaching her pet dog how to play fetch.
Update: The woman is the wife of a K-9 officer
Example Output: strengthener

Example Input: Premise: A man sawing wood on a fence.
Hypothesis: It's sunny outside while a man is cutting wood.
Update: The man is wearing a visor and sunglasses.
Example Output: strengthener

Example Input: Premise: Two women are posing for a picture; one wearing a white dress, and the other wearing a white and black costume, and tall, red-hair.
Hypothesis: Both of the women are tall
Update: One of the women is famous for playing a "little person" in The Wizard of Oz.
Example Output:
weakener