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 girls sit back to back.
Hypothesis: A group of girls are sitting on the road.
Update: The girls are refugees.

SOLUTION: strengthener

PROBLEM: Premise: These people are demonstrating for their leader.
Hypothesis: The people demonstrating are male.
Update: The people are breast feeding children.

SOLUTION: weakener

PROBLEM: Premise: a boy swimming in a pool with goggles on
Hypothesis: The boy is swimming outdoors.
Update: The boy put on a lot of sunblock.

SOLUTION:
strengthener