Task: Question Answering
Input (English): A forecast for "wintry mix" indicates that vapor in the air will form both rain and snow. Which of these is a correct principle illustrated by this event?  
 (A) There is little water in the atmosphere of Earth. (B) Most water on Earth is found as vapor. (C) Water exists in all three states on Earth. (D) Water on Earth tends to form a solid over time.
Output (English): C