Task: Question Understanding
Input (English): Question: A refrigerator uses electricity to create a cold place to store food. What negative impact does refrigerator use have on the environment? (A) The electricity needed to keep food cold can be expensive. (B) If the electricity goes out, the food will spoil and make you sick. (C) Storing food longer reduces grocery store trips and gasoline use. (D) Old refrigerators contain chemicals and take up space in landfills.?
Output (English): negative, impact, refrigerator, environment?