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.

Ex 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.

Ex Output:
strengthener


Ex Input:
Premise: An elderly man uses his walking stick to poke into a hole in the ground.
Hypothesis: A guy sticks his wooden stick in the ground.
Update: The stick is vulnerable to termites.

Ex Output:
strengthener


Ex Input:
Premise: Two people with children exchange words.
Hypothesis: The children are friends.
Update: They are all strangers at the bus stop making small talk while they wait for the bus.

Ex Output:

weakener