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: Erotic show with guests looking onwards.
Hypothesis: Some guests are relatives.
Update: There are two people who look identical to one of the dancers.
Example Output: strengthener

Example Input: Premise: Man in black takes a nap on a bench in front of a sign reading "Justicia sin Olvido."
Hypothesis: The man in black made a sign.
Update: The man has a marker with him.
Example Output: strengthener

Example Input: Premise: A balding man is waving for the camera as he is seated in a large vehicle with several people dressed in coats, hats and other winter clothing.
Hypothesis: these people are on their way to go christmas carolling
Update: They each have a songbook in their hands.
Example Output:
strengthener