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.

Example Input: Premise: A cat is watching a girl construct a Lego airplane.
Hypothesis: A cat is watching a girl build a airplane and throw it across the room
Update: The plane is only half finished
Example Output: weakener

Example Input: Premise: A middle eastern guy selling stuff street side.
Hypothesis: an arabian man sells flowers
Update: Bees are flying around the man's stand
Example Output: strengthener

Example Input: Premise: A young man takes aim in a carnival game.
Hypothesis: The young man is a great carnival game player
Update: He knocks over all the milk bottles and wins a prize.
Example Output:
strengthener