{
  "O": 0,
  "B-DAT": 1,
  "I-DAT": 2,
  "B-DIS": 3,
  "I-DIS": 4,
  "B-HUM": 5,
  "I-HUM": 6,
  "B-LOC": 7,
  "I-LOC": 8,
  "B-MED": 9,
  "I-MED": 10,
  "B-ORG": 11,
  "I-ORG": 12,
  "B-PAT": 13,
  "I-PAT": 14,
  "B-SYM": 15,
  "I-SYM": 16
}