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.

Ex Input:
Premise: A man wearing black sits outside under palm trees near green and blue chairs.
Hypothesis: It is sunny outside.
Update: He is glistening with tanning oil

Ex Output:
strengthener


Ex Input:
Premise: A man sits with a little boy in the drivers seat of a jeep.
Hypothesis: Man driving with child on lap.
Update: The jeep's wheels are spinning quickly.

Ex Output:
strengthener


Ex Input:
Premise: The girl in the red and black striped pants smiled as she rode by on her unicycle.
Hypothesis: The girl had good balance.
Update: The girl is an expert unicycle rider.

Ex Output:

strengthener