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.

Premise: two guys sitting on the floor, with the guy in the green jacket reading a piece of paper.
Hypothesis: The piece of paper is an eviction notice for the couple.
Update: Both the men look sad.
strengthener

Premise: The three girls sat on the beach.
Hypothesis: The three girls sat on the beach gazing at the water.
Update: A clown is performing at the beach today.
weakener

Premise: A woman and man with bikes stand by a man with a guitar in front of a large building with a balcony.
Hypothesis: The man with the guitar is collecting donations.
Update: The man asks for any help or food.

strengthener