{ "question" : {
    "id": "",
    "category": "regex",
    "nerd_level": 3,
    "text": "Which regex will match 'foobaz' and 'fooboz' but not 'foobar'",
    "a1": "/foo[^bar]/",
    "a2": "/foo(?!bar)/",
    "a3": "/foo(?:bar)/",
    "a4": "/foo(?!=bar)/",
    "right_answer": "a2",
    "created_at": "2011-06-07",
    "created_by": "mkorfmann"
  }
}