Use reasoning to lead to the answer of the following question:
The spoiled child's playroom was massive, but only one of many rooms in the what?\nOptions:\n- big house\n- nursery school\n- preschool\n- building\n- retirement home
 Reasoning process:
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A big house has many rooms. Massive rooms can be found in a big house. Big house can have a child's playroom. Therefore, the final answer is big house.
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