Task: Question Understanding
Input (English): Question: Tisha visited the same beach two summers in a row. She found that some sand dunes that were there the first summer were gone the next summer. Farther down the beach she saw many more sand dunes that had not been there before. What most likely caused this change? (A) Wind blew the sand and deposited it elsewhere. (B) Waves deposited shells and seaweed on the beach. (C) The salt from the ocean settled out of the water onto the beach. (D) The Sun's energy warmed the sand, causing it to expand.?
Output (English): beach, two, summers, row., sand, dunes, summer, gone, beach, sand, dunes, caused, change?