input: Please answer the following: What is the missing first step of the following process: - The air enters the mouth and nose - The diaphragm contracts - Air fills all the sacks in the lungs - Oxygen passes through the sacks into capillaries - The blood is passed to the blood in the capillaries - The blood carries the oxygen to the heart - The heart pumps the oxygenated blood to the body.
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output: You inhale

Please answer this: What is the missing first step of the following process: - Coal is pulverized into fine powder - The coal is mixed with hot air - The coal and hot air are blown into a boiler - The coal and hot air burn over a fire - Highly purified water is pumped through pipes in the boiler - The water turns into steam - The steam presses against turbines - The turbines spin - Electricity is produced.
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Answer: Coal is mined out of the ground

Problem: What is the missing first step of the following process: - A group of people work to design a satellite capable of accomplishing the need - A team designs the physical structure of the satellite - A crew builds the physical satellite - The satellite is packed into a capsule - The satellite capsule is loaded onto a rocket - The rocket is launched into space.

A: A satellite's need is determined

Problem: Given the question: What is the missing first step of the following process: - The parent(s) incubate the eggs - The eggs hatch - The mother (and sometimes the father) bird take care of the baby birds - The baby birds grow up and get their flight feathers - The young birds learn to fly and leave the nest - The adult birds find mates and mate.
++++++++++++++++++++++++++++++++
The answer is:
A bird lays eggs in a nest

input question: What is the missing first step of the following process: - Through erosion, the stream cuts into the soil and bedrock - Through continuous erosion, a deep gash is cut through - After many years the river may dry up - A dry ravine is left -???
output answer: A stream or river must occur

input question: What is the missing first step of the following process: - Passes through the lungs - And into the bronchial tissue - The carbon dioxide is removed - The lungs bring the oxygen to the rest of the body.???
output answer:
Air is brought in through the mouth