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 swimmers competing in swim competition.
Hypothesis: The swim competition is held inside
Update: The swimmers swim under some bright lights on the ceiling.

Ex Output:
strengthener


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: An english farmer with a horse pulled wagon.
Hypothesis: There is a farmer riding a wagon outdoors
Update: The sun is setting behind the hill.

Ex Output:

strengthener