text: var nodes = new vis.DataSet([
                               /* {id: a, label: b, ...}, */
  {id: '4792', label: 'A1\n12.0', color: '#31b0d5', title: 'Name: A1<br>Alias: null<br>Value: 12.0<br>Type: CELL_WITH_REFERENCE<br>Id: 4792<br>Formula Expression: Formula String: VALUE; Formula Values: 12.0; Formula Ptg: ; Ptgs:  Index in Ptgs: 0 <br>Source Object Id: com.dataart.spreadsheetanalytics.engine.PoiProxyWorkbook@2d5b549b'},
  {id: '4793', label: 'VALUE\n12.0', color: '#31b0d5', title: 'Name: VALUE<br>Alias: null<br>Value: 12.0<br>Type: CONSTANT_VALUE<br>Id: 4793<br>Formula Expression: Formula String: VALUE; Formula Values: 12.0; Formula Ptg: 12.0; Ptgs: VALUE Index in Ptgs: 0 <br>Source Object Id: com.dataart.spreadsheetanalytics.engine.PoiProxyWorkbook@2d5b549b'}
                              ]);
  
  
  var edges = new vis.DataSet([
                               /* {from: id_a, to: id_b}, */
  {from: '4793', to: '4792'}
                              ]);