anchor.diff:              "@value" : 8
             },
             "value" : "brussels",
  +          "vertex" : {
  +            "@type" : "g:Int32",
  +            "@value" : 1
  +          },
             "label" : "location",
             "properties" : {
               "startTime" : {
  
positive.code:                 "@value" : 16
                },
                "value" : "seattle",
                "label" : "location",
                "properties" : {
                  "startTime" : {
  
negative.code:         },
          "properties" : {
            "since" : {
              "@type" : "g:Int32",
              "@value" : 2010
            }
          }
        }
  