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.

Input: Consider Input: Premise: Man on roof touching a shingle.
Hypothesis: Human on top of bulding grabbing a shingle.
Update: The man moves his hands over to the chimney and hangs onto it.

Output: weakener


Input: Consider Input: Premise: a man in a beige shirt is operating a video camera next to a girl in a black sweater.
Hypothesis: The video camera is pointed at the girl.
Update: Two trapeze artists are putting on a show.

Output: weakener


Input: Consider Input: Premise: A young girl in striped pajamas holding her arms up.
Hypothesis: The girl is outside in the rain.
Update: The girl is shivering from the cold


Output: strengthener