Teacher: In this task you are given a story and a question regarding that story. You must judge whether the question is answerable based on the info given to you. Label the instances as "Answerable" or "Not Answerable" based on your judgment. the story and the question are separated by a new line character.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Bob was a computer scientist. He enjoyed natural language processing. He decided to revolutionize the industry! He formulated a machine learning algorithm to process words. He won the nobel prize for his work!
Why did He formulate a machine?
Solution: Answerable
Reason: He formulated a machine learning algorithm to process words.

Now, solve this instance: Lu got into the business of selling chemical enhancements via spam. When Google started using CAPTCHAs, it cut into his business. He searched low and high for a solution to his problem. He found it in cheap crowd-sourced labor. Using humans to solve the CAPTCHAs, he can send his spam again.
Why did He search low and high?
Student:
Answerable