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: Four people wearing red, blue, white& black, walking up a white staircase overlooking a marina in an old city.
Hypothesis: The group of people are all part of a party.
Update: They are returning children on Halloween who wore matching costumes while trick or treating.
weakener

Premise: A woman in a white t-shirt points at a geyser.
Hypothesis: The lady is watching tv in her white T shirt and points at the geyser on the TV.
Update: As it erupts she is soaked.
weakener

Premise: A little girl is holding up a yellow water hose and water is pouring out and the big brown dog is drinking the water.
Hypothesis: The girl and dog are playing a game
Update: The girl is playing with her dolls.

weakener