Problem: What is the final step of the following process: - Some of the rock in the ground is made of limestone - Over long periods of time rain can hit the limestone - And cause a acidic reaction - The limestone will slowly disintegrate - A large gap with be where the limestone was

A: Result in the cave.

Problem: Given the question: What is the final step of the following process: - You place aluminum cans and other products into recycling bins - Your town or a private company collect and transport the aluminum to a recycling facility - The aluminum is sorted and cleaned at the central recycling facility - The aluminum is melted down to remove coatings and inks - The melted aluminum is formed into large formations called ingots - The ingots are transported to another facility and rolled out to make them easier to manipulate
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The answer is:
The ingots can now be turned into new aluminum products.

input question: What is the final step of the following process: - An airline reservation is made - The passenger arrives early at the airport - The luggage is checked - The passenger waits in line - The passenger shows their identification and gets a boarding pass - The passenger goes to their gate - The passenger gets in line when it's time to board - The person boards the plane - The plane arrives at the destination???
output answer: The passenger gets off the plane at their destination.

What is the final step of the following process: - Get some seeds - Pick a spot to plant them - Dig a hole in the dirt - Put the seed in the hole - Pour some water on the seed and hole - Cover up the hole - Press down on it
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Answer: Spray some plant food on it.

Q: What is the final step of the following process: - Waves hit the coast - Waves have energy that pushes the water and sediment - The sediment can help erode land like sandpaper - Water washes the sediment back
A: Some sediment is left as sand.

[Q]: What is the final step of the following process: - Bread is exposed to the elements - Bread absorbs water from the air - Bread absorbs warmth from the air - Dust particles with mold spores fall on bread - Mold spores start to consume the bread for energy
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[A]:
Mold colonies grow until they are visible.