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 teen is on a bicycle doing a jump on a dirt ramp.
Hypothesis: A teen is on a dirt track riding through various jumps
Update: The ramp is part of a dirt track.
strengthener

Premise: Tree boys are skating while one takes pictures and a girl looks on.
Hypothesis: The boys are in a race.
Update: The boys are competing for the affection of the girl.
strengthener

Premise: A man with brown hair and glasses wearing a dark overcoat, suit and tie reading a newspaper on the subway or train.
Hypothesis: A man is reading a news article.
Update: The man is learning about the situation in Syria.

strengthener