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.
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Question: Premise: Two women of Asian descent walk beside a city street busy with cars.
Hypothesis: Two women are carrying grocery bags down the street.
Update: They hurry along, each carrying at least two grocery bags in each hand.

Answer: strengthener


Question: Premise: A flying machine with a yellow sail is landing with industrial buildings in the background.
Hypothesis: The machine is not gas-operated.
Update: The machine has a battery.

Answer: strengthener


Question: Premise: A group of people walking in front of a subway rail.
Hypothesis: A group of people waiting for a subway car to arrive.
Update: The people are looking down the track in the direction the train will be coming from.

Answer:
strengthener


