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: Three school boys posing under a blue umbrella.
Hypothesis: Some asian children posing for a picture in the rain.
Update: The three Hispanic children are sitting on the sunny beach under the umbrella.

Ex Output:
weakener


Ex Input:
Premise: A city block is sealed off by the police.
Hypothesis: People can not access the city block.
Update: The block is completely empty and there are policemen guarding barriers around the block.

Ex Output:
strengthener


Ex Input:
Premise: Two construction men walk in front of a big wall with a mannequin with a construction shirt near two boots.
Hypothesis: Two construction men joyously walk
Update: The two men look weary and depressed as they walk.

Ex Output:

weakener