question: What sentence would provide a factual answer to this question: "Octopuses excrete an ink as defense when"

answer: ink is used for hiding from predators by octopuses

question: What sentence would provide a factual answer to this question: "if the boiling point of water is attained, what ensues beyond this point?"

answer: steam is a kind of water above 100 degrees celsius

question: What sentence would provide a factual answer to this question: "What might be harder to digest?"

answer:
the breaking down of food into simple substances occurs in the digestive system