Task: Question Answering
Input (English): Passage: On August 22, 2010 in rural Ohio, serial killer Edward Scarka is shot to death during a police raid of his farmhouse. At the time of Edward's death, married couple Sarah and John give birth to their son, Miles, in Pennsylvania. Miles shows extreme wisdom and intelligence from quite a young age, and begins speaking fluently before he is even a toddler.
When Miles turns eight in 2018, Sarah and John begin noticing behavioral changes in him. One night he plays a prank on his babysitter Zoe, seriously injuring her, but claims no memory of the incident. Days later at school, he attacks a classmate with a wrench he obtains from the janitor's closet. Sarah brings Miles to psychologist Elaine Strasser, and also turns over a tape recording of Miles talking apparent gibberish in his sleep. Elaine gives the tape to a colleague, Arthur Jacobson, an expert on rebirth and reincarnation. Arthur reveals that the gibberish Miles spoke on the tape is in fact Hungarian, and that the words translate to "I'll cut your eyes out and watch you die, whore."
Unwilling to believe Arthur's assertion that an unsettled spirit is vying for control of Miles's body, Sarah dismisses him. Later at home, the family's dog goes missing, and John becomes infuriated when he finds that Miles has been recording the couple's bedroom with a baby monitor. John leaves to stay with his brother, leaving Sarah alone with Miles in the house. Miles awakens her in the middle of the night, and she finds a swarm of flies in the house. In the basement, Sarah discovers the family's dismembered dog. Miles apologizes, and explains that someone is invading his dreams every night, and that he has to "make room.". 
Question: Who plays a prank on their babysitter?
Output (English): Miles.