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: A woman is standing near the water, looks to be throwing something.
Hypothesis: The woman is skipping rocks.
Update: The woman is looking for turtles.
weakener

Premise: Two dogs on leashes get close together.
Hypothesis: The two dogs strain to get closer while the owners try and pull them back.
Update: The dogs don't know each other so the owners are keeping them separated.

strengthener