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: It's understandable that sometimes things are broken by accident, when no harm was meant.
Update: It was a child who broke something.
[A]: strengthener


[Q]: Hypothesis: You are allowed to establish rules for your home.
Update: The rules are fair and sensible.
[A]:
strengthener