TASK DEFINITION: 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.
PROBLEM: Premise: A group of volunteers help build a house on behalf of Habitat for Humanity.
Hypothesis: Tall beings building
Update: The group of volunteers are average height.

SOLUTION: weakener

PROBLEM: Premise: Two men sitting on their living floor.
Hypothesis: Two men play video games in the living room.
Update: They are eating a pizza.

SOLUTION: weakener

PROBLEM: Premise: Two people working on a sculpture in an art studio.
Hypothesis: The people are using clay for their sculpture.
Update: One person says 'This rock is hard to mold'

SOLUTION:
weakener