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: A young man is presenting another woman with a cake with three candles on top.
Hypothesis: The cake has white frosting.
Update: The dark chocolate cake was the woman's favorite flavor.
Example Output: weakener

Example Input: Premise: A child in a green cap sits at a boats controls.
Hypothesis: watched by a group
Update: 3 women stare at him.
Example Output: strengthener

Example Input: Premise: A man in a black suit and a woman wearing a white dress and holding flowers getting married
Hypothesis: the man is giving flowers to the woman.
Update: There is a grave nearby.
Example Output:
weakener