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

Input: Consider Input: Hypothesis: It is good to acknowledge when people change for the better.
Update: Acknowledging the change encourages them to keep improving.

Output: strengthener


Input: Consider Input: Hypothesis: You should try to be happy for your siblings instead of resorting to jealousy
Update: Your parents gave your siblings the entire inheritance

Output: weakener


Input: Consider Input: Hypothesis: It is good to follow through on obligations.
Update: You have made a promise to one of your children.


Output: strengthener