Definition: You are given a sentence and a question in the input. The information provided in the sentence should be enough to answer the question. You're expected to write the correct answer. Do not use any facts other than those provided in the sentence.
Input: Sentence: Timmy thought it had been a perfect day, even if he couldn't bring his dog. 
Question: What could Timmy not bring with him to his grandma's house?
Output:
His dog.