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: A musician is giving a concert to fans.
Hypothesis: they are playing pianos
Update: The musician sits on a stool next to a microphone.
weakener

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: A dark-haired man sits atop a structure near a dark-haired woman wearing sunglasses.
Hypothesis: A man and his wife sit outdoors wearing sunglasses.
Update: The woman is a police officer.

weakener