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: Sam told the doctor all about his fall off the tricycle and the doctor wrote a lot of notes down. 
Question: Why did the doctor write a lot of notes down?
A:
Because Sam told him about his fall off the tricycle.