{ "head": {
    "vars": [ "x" , "lang" ]
  } ,
  "results": {
    "bindings": [
      { 
        "x": { "type": "uri" , "value": "http://example/x1" } ,
        "lang": { "type": "literal" , "value": "en" }
      } ,
      { 
        "x": { "type": "uri" , "value": "http://example/x2" } ,
        "lang": { "type": "literal" , "value": "en" }
      } ,
      { 
        "x": { "type": "uri" , "value": "http://example/x3" } ,
        "lang": { "type": "literal" , "value": "ar" }
      } ,
      { 
        "x": { "type": "uri" , "value": "http://example/x4" } ,
        "lang": { "type": "literal" , "value": "" }
      } ,
      { 
        "x": { "type": "uri" , "value": "http://example/x5" }
      }
    ]
  }
}
