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: Several people standing in the street.
Hypothesis: people were waiting for the light to change so they could cross
Update: The police officer was holding them up with his hand.
strengthener

Premise: A dog in a sandy area with the sand stirred up into the air and several plants in the background.
Hypothesis: The dog is a Great Dane.
Update: Someone is overheard saying 'Wow he's huge!'
strengthener

Premise: Drummers march down the street.
Hypothesis: Drummers march down the busy street.
Update: The street is made of dirt and rocks.

weakener