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.

Q: Premise: A police officer is monitoring a by stander while guarding a building.
Hypothesis: The police officer is a man.
Update: The officer looks stern.

A: strengthener
****
Q: Premise: A man in a blue shirt is speaking to a group of people in front of a building.
Hypothesis: The man is giving a speech about an important topic.
Update: He is telling the new tenants where their room is.

A: weakener
****
Q: Premise: A boy stands beside a railing at a go kart track.
Hypothesis: a young champion scopes the track
Update: The boy is too young to ride go karts.

A:
weakener
****