Detailed Instructions: 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.
Q: Sentence: The most important thing that Santa has to do for the reindeer is to make sure they have their coffee on Christmas Eve. 
Question: What are needed for the reindeer before they are ready to fly on Christmas Eve?
A:
Make sure they have their coffee.