Generate a sentence that answers this question: "Electricity from a power plant lights up a light bulb in a house because".

Answer: if one electrical conductor contacts another electrical conductor then electricity will flow through both conductors

Generate a sentence that answers this question: "A person who wants to eat a watermelon may consider spitting out its".

Answer: a berry contains seeds

Generate a sentence that answers this question: "Genes are a vehicle that can pass".

Answer:
genes are a vehicle for passing inherited characteristics from parent to offspring