{
  "input" : [
    { "item" : "darkwoodmaterial", "count" : 30 },
    { "item" : "plantfibre", "count" : 10 }
  ],
  "output" : {
    "item" : "bow",
    "count" : 1
  },
  "groups" : [ "plain", "all", "weapons" ]
}