{ "head": {
    "vars": [ "t" ]
  } ,
  "results": {
    "bindings": [
      { 
        "t": {
          "type": "triple" , 
          "value": {
            "subject":  { "type": "uri" , "value": "http://example/s" } ,
            "predicate": { "type": "uri" , "value": "http://example/p" } ,
            "object":   { "type": "uri" , "value": "http://example/o" }
          }
        }
      }
    ]
  }
}
