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.

People remember their fights, but one fight Charles will never forget. He called his x-girlfriend and said he didn't know if the kid was his? She passed the phone to a guy who started arguing. Charles told this guy where to meet for a fight. That guy punched Charles in the mouth so hard he needed stitches.
Why did He call his x - girlfriend?
Charles didn't know if his kid was his.

My 98 year old friend Joe sat on the bench this summer. He told me he needed light therapy. He went to a hospital once a week and was exposed to bright lights. The light was supposed to make him feel better. He stopped because the therapy was not working.
Why did He go to a hospital?
he needed light therapy.

Harry brought a rat to London one day to be his pet. After a while, Harry and members of his family got sick. Boils appeared over their body. Harry's baby sister fell very ill and died. Harry realized the rat brought the plague and flushed it down the loo.
Why did Boils appear over their body?
Harry and his family had the plague.