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: You should be fair when tipping a server
Update: You're in a country without tipping at restaurants.

Output: weakener


Input: Consider Input: Hypothesis: It's good to diffuse a tense situation.
Update: There is a chance it could escalate to violence.

Output: strengthener


Input: Consider Input: Hypothesis: It is wrong to exclude a mentally disabled person from a game.
Update: There is a high likelihood that they will get hurt, or hurt others.


Output: weakener