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 walking little girl with backpack across street.
Hypothesis: The man is the girl's father.
Update: The man kisses the girl on the cheek.

Output: strengthener


Input: Consider Input: Premise: A bunch of people standing on sand.
Hypothesis: people are standing on a beach.
Update: Everyone is standing barefoot on hot sand.

Output: strengthener


Input: Consider Input: Premise: A child seated at the dentists.
Hypothesis: A child is seated at his first dentist appointment.
Update: The child is nervous but his mother said that that everything will be fine.


Output: strengthener