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

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

Example Input: Hypothesis: It's wrong to barge in on your roommate and their partner.
Update: The building is on fire and you need to tell them to evacuate.
Example Output: weakener

Example Input: Hypothesis: People are expected to be supportive of their friends.
Update: they are playing in the finals.
Example Output:
strengthener