Q: 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.
Sentence: But as soon as John and Sally were in the darkest part of the forest, they heard a terrible roar. 
Question: What happened when John and Sally got into the darkest part of the forest?
A:
They heard a terrible roar.