{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "properties": {
    "@id": {"type": "string"},
    "nif:beginIndex": {"type": "integer"},
    "nif:endIndex": {"type": "integer"},
    "nif:anchorOf": {
      "description": "Piece of context that contains the Sentiment",
      "type": "string"
    },
    "marl:hasPolarity": {
      "enum": ["marl:Positive", "marl:Negative", "marl:Neutral"]
    },
    "marl:polarityValue": {
      "type": "number"
    },
    "prov:wasGeneratedBy": {
      "type": "string",
      "description": "The ID of the analysis that generated this Sentiment. The full object should be included in the \"analysis\" property of the root object"
    }
  },
  "required": ["prov:wasGeneratedBy"]
}