Task: Question Answering
Input (English): Context: I bought myself birthday presents . I ordered " Ink Exchange " by Melissa Marr from Borders . The books been out for months and I ' ve been waiting until I was sure I had the money for college before getting it . And I treated myself to some sushi . 12 pieces for less than $ 5 ?. 
Question: What may be the reason for this person buying gifts for themselves ?
Output (English): They are celebrating their own birthday .