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, that is, it makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis, that is, it makes you much more likely to believe the hypothesis is true. Your task is to answer with 'strengthener' or 'weakener' if the update strengthens or weakens the hypothesis, respectively.

Input: Consider Input: Premise: A city block is sealed off by the police.
Hypothesis: People can not access the city block.
Update: The block is completely empty and there are policemen guarding barriers around the block.

Output: strengthener


Input: Consider Input: Premise: People walking along a pathway along a lake.
Hypothesis: People may going swimming in the lake.
Update: The people are wearing swimsuits.

Output: strengthener


Input: Consider Input: Premise: A man and woman sit in a restaurant holding books, the woman reading hers and the man looking at the woman.
Hypothesis: A couple read their favorite books, as the food they have ordered is on its way.
Update: There are plates on the table with crumbs on them and the books are school textbooks.


Output: weakener