{
  "comments": {
    "new": "ISBN: 0-87321-293-2"
  },
  "ring_codes": {
    "new": "1000504101US R2J IFPI L239 11, 13 IFPI 4121",
    "old": "1000504101US R2J IFPI L239 11 IFPI 4121"
  }
}