Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Input: Consider Input: Question: Kangaroos, koala and opossums are part of what group? Answer: marsupials

Output: Marsupials. Marsupials include the kangaroo, koala, and opossum.

Input: Consider Input: Question: Oxygenated blood is transported by what system? Answer: circulatory

Output: Oxygenated blood is transported by the circulatory system from lungs to tissues throughout the body.

Input: Consider Input: Question: Radioisotopes may vary greatly in their rate of decay, decaying faster if their nuclei are more what? Answer: unstable
Output: Different radioisotopes may vary greatly in their rate of decay. The more unstable their nuclei are, the faster they decay.