input: Please answer the following: -  The oxygen travels to the lungs through the windpipe - The air sacs in the lungs send the oxygen into the blood stream - The carbon dioxide in the blood stream is transferred to the air sacs - The lungs expel through the nose or mouth back into the environment.  What might be the first step of the process?
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output: You breathe oxygen into your body through the nose or mouth


input: Please answer the following: -  Your stomach digests the food - Sugars from food enter your bloodstream - Insulin helps turn sugars into energy - Insulin helps your body store the energy in fat, muscle and liver cells -   What might be the first step of the process?
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output: You eat food


input: Please answer the following: -  The star does not have enough mass to become a neutron star - The star goes through a change in its core and bonds helium to carbon and oxygen - The star becomes a red giant - A mass of carbon and oxygen builds up in the center of the star - The star sheds its outside layers and becomes a nebula - The star leaves behind the core which becomes a dwarf star.  What might be the first step of the process?
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output: A star forms


input: Please answer the following: -  Water droplets are in clouds - The air gets cold - Water droplets turn into ice crystals - Ice crystals in clouds stick together and become snowflakes.  What might be the first step of the process?
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output: