TASK DEFINITION: In this task, you are given a hypothesis and an update. The hypothesis sentence is a statement that speaks of a socially normative behavior. In other words, it is a generalizing statement about how we expect people to behave in society. The update provides additional contexts about the situation that might UNDERMINE or SUPPORT the generalization. An undermining context provides a situation that weakens the hypothesis. A supporting context provides a situation that strengthens the generalization. Your task is to output 'strengthener' or 'weakener' if the update supports or undermines the hypothesis, respectively
PROBLEM: Hypothesis: It is ok to not leave a tip if your hairdresser did a very bad job or cut you with the clippers.
Update: they are a friend.

SOLUTION: weakener

PROBLEM: Hypothesis: It's expected to get a lot of gifts on a birthday.
Update: You are an adult and don't celebrate it.

SOLUTION: weakener

PROBLEM: Hypothesis: It's wrong to try to control the body of another.
Update: You're an Olympic coach.

SOLUTION:
weakener