Use reasoning to lead to the answer of the following question:
John wanted to clean the mold out of his house. Where might he check for mold?\nOptions:\n- jello\n- carpet\n- fridge\n- refrigerator\n- cellar
 Reasoning process:
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Cellar is a underground room in house. Cellar is attached to ground hence can have mold. Therefore, the final answer is cellar.
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