question: What sentence would provide a factual answer to this question: "What substance found in rocks shares it's name with an object which can take wrinkles from an item worn on the body to cover the skin from the elements?"

answer: rocks sometimes contain iron

question: What sentence would provide a factual answer to this question: "If a bucket of water from the sea is left out in the sun for long enough, all that will eventually remain in the bucket is"

answer: the ocean contains large amounts of salt water

question: What sentence would provide a factual answer to this question: "The continents currently experiencing winter will be the ones which are"

answer:
winter is when a hemisphere is tilted away from the sun