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.

[Q]: Premise: A man in a yellow construction hat with a tool bag on his back, is drilling a wall labeled superior walls.
Hypothesis: A construction worker is building the walls to a house.
Update: The wall has windows in it.
[A]: strengthener


[Q]: Premise: A man in a hat and coat is holding a pitchfork and posing for a picture.
Hypothesis: The man is on a farm
Update: There are chickens and cows all around him.
[A]: strengthener


[Q]: Premise: A woman and a child are standing next to a chalkboard on an easel.
Hypothesis: A mother and son are standing next to a chalkboard.
Update: The chalkboard is in the child's living room.
[A]:
strengthener