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.

Input: Consider Input: Premise: Two little girls reading and a baby listening.
Hypothesis: The baby is the girl's sibling.
Update: They are sitting on a living room floor, surrounded by their toys.

Output: strengthener


Input: Consider Input: Premise: A man sits with a little boy in the drivers seat of a jeep.
Hypothesis: Man driving with child on lap.
Update: The jeep's wheels are spinning quickly.

Output: strengthener


Input: Consider Input: Premise: 3 people passing the bus stop while on a bike ride down the street.
Hypothesis: People riding bikes at night.
Update: The street lights are on.


Output: strengthener