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: A lady in a sunhat sitting and reading a book by a body of water.
Hypothesis: A lady is sitting and reading.
Update: The lady has several library cards.
strengthener

Premise: Man walking little girl with backpack across street.
Hypothesis: The man is the girl's father.
Update: The man kisses the girl on the cheek.
strengthener

Premise: A man with a black baseball cap, blue shorts, gloves and no shirt is standing atop a roof.
Hypothesis: There is a man cleaning out the gutter on his house.
Update: He is leaning over and reaching onto the roof with a pile of debris on the ground below him.

strengthener