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: One day Joe saw a White moving truck down the street from his and Nate's tree house. 
Question: What color was the van and the tree house?
White.

Sentence: John thought this rainy day was perfect. 
Question: Why did John and Bentley come inside?
It was raining.

Sentence: Kacey got home to see the big back of the monster in the door. 
Question: What does Kacey do and what bad thing happens because of it?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Kacey got home, and she sees the monster.

