Generate a sentence that answers this question: "The moon is bright in the night sky, especially when full because".

Answer: the moon reflects sunlight towards the Earth

Generate a sentence that answers this question: "You can produce what by burning natural gas?".

Answer: natural gas is a source of heat by burning

Generate a sentence that answers this question: "If a leg is moving then the bones inside the skin are".

Answer:
muscles pull bones to move the bones