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: People in blue t-shirts stand in the grass.
Hypothesis: People in blue t-shirts stand around talking about their lives.
Update: They are looking at pictures of one another's vacations on their smartphones.

Output: strengthener


Input: Consider Input: Premise: A woman serving a tennis ball.
Hypothesis: A woman is playing tennis with her husband.
Update: She has a basket of balls to practice with alone.

Output: weakener


Input: Consider Input: Premise: A man with a dark green apron standing with his hands on his waist with a grill in the background.
Hypothesis: The man in a dark green apron is grilling hotdogs.
Update: the man holds onto tongs and watches the grill


Output: strengthener