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

[Q]: Hypothesis: It's reasonable to want your children to have your surname.
Update: Especially if it's also their father's surname.
[A]: strengthener


[Q]: Hypothesis: Spouses should always know each other's birthdays.
Update: Neither person enjoys the annual reminder they're getting older.
[A]: weakener


[Q]: Hypothesis: You should talk with a friend if a behavior of theirs is annoying you.
Update: it is a nervous tic that they know about and can't control it.
[A]:
weakener