You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
In this task you are given a short story and a question regarding that story. You must answer the question based on the events of the story. Try to use the same words in the story to answer each question. You should completely answer the question in a short answer. Do not include information that is unnecessary to answer the question.

Charlie was unemployed though she was a good worker. Charlie needed to seek work quickly to keep up with paying bills. Charlie looked in the classified ads for a job and found one. Charlie went to company headquarters and applied in person. Charlie arrived at the interview prepared and was given a job offer.
Why did Charlie go to company headquarters?
Solution: she was applying for a job.
Why? the answer can be inferred from the fourth sentence, and completely answers the question.

New input: I realize that wheat flour was bad for my stomach. I became upset that I couldn't use wheat flour anymore. My friend told me that I could make flour out of acorns. I harvested some acorns and ground them into flour. The acorn flour was a perfect substitute.
Why did I harvest some acorns?
Solution:
my friend I could make flour with them.