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: Two football teams lined up before the hike.
Hypothesis: Two football teams line up during the superbowl for the hike.
Update: Ad time at the event is absurdly expensive.

Ex Output:
strengthener


Ex Input:
Premise: A man on a bridge holds a blue object over the rail.
Hypothesis: A sad man on a bridge holds a blue object over the rail.
Update: The man is frowning and looks like he may cry.

Ex Output:
strengthener


Ex Input:
Premise: A man in mid- air while going down a sand-dune.
Hypothesis: The man is doing an awesome trick.
Update: The man has a terrified look on his face

Ex Output:

weakener