TASK DEFINITION: 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.
PROBLEM: Premise: Lecture takes place in casual atmosphere.
Hypothesis: The lecture is lengthy.
Update: Most people had packed a lunch.

SOLUTION: strengthener

PROBLEM: Premise: A professional baseball catcher and behind him an umpire are knelt in action position and are awaiting the pitch.
Hypothesis: World Series game 3 is being played
Update: They are in an empty stadium.

SOLUTION: weakener

PROBLEM: Premise: Three children wait at a table for a cake to be sliced.
Hypothesis: The cake is a frozen cake.
Update: There is hot fudge in the center of the cake that drizzles out as the cake is sliced.

SOLUTION:
weakener