{ "head": {
    "vars": [ "s" , "p" , "z" ]
  } ,
  "results": {
    "bindings": [
      { 
        "s": { "type": "uri" , "value": "http://example/s2" } ,
        "p": { "type": "uri" , "value": "http://example/p" } ,
        "z": { "type": "literal" , "value": "same-p" }
      } ,
      { 
        "s": { "type": "uri" , "value": "http://example/s2" } ,
        "p": { "type": "uri" , "value": "http://example/p" } ,
        "z": { "type": "uri" , "value": "http://example/z2" }
      }
    ]
  }
}
