instruction:
In this task, you are given a premise, a hypothesis, and an update. The premise sentence describes a real-world situation and is always assumed to be true. The hypothesis sentence describes an assumption or inference that you might make about that situation having read the premise. The update provides additional information about the situation that might weaken or strengthen the hypothesis. A weakener is a statement that weakens the hypothesis. It makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis. It makes you much more likely to believe the hypothesis is true. Your task is to output 'strengthener' or 'weakener' if the update strengths or weakens the hypothesis, respectively.
question:
Premise: PersonX joins PersonX's friends
Hypothesis: PersonX then is smiling
Update: PersonX walked into a surprise birthday party
answer:
strengthener


question:
Premise: PersonX opens the back door
Hypothesis: As a result, PersonX feels fit
Update: The air inside was considerably colder
answer:
strengthener


question:
Premise: PersonX gathers PersonX's family
Hypothesis: Because PersonX wanted to spend time with them
Update: PersonX and PersonY have known each other their whole life.
answer:
strengthener