text: var nodes = new vis.DataSet([
                               /* {id: a, label: b, ...}, */
  {id: '5048', label: 'E5\n[9.0, 7.0]', color: '#31b0d5', title: 'Name: E5<br>Alias: null<br>Value: [9.0, 7.0]<br>Type: CELL_WITH_FORMULA<br>Id: 5048<br>Formula Expression: Formula String: [9.0, 7.0]; Formula Values: [9.0, 7.0]; Formula Ptg: ; Ptgs:  Index in Ptgs: 0 <br>Source Object Id: com.dataart.spreadsheetanalytics.engine.PoiProxyWorkbook@125ed27'},
  {id: '5049', label: 'A5\n7.0', color: '#31b0d5', title: 'Name: A5<br>Alias: null<br>Value: 7.0<br>Type: CELL_WITH_VALUE<br>Id: 5049<br>Formula Expression: Formula String: A5; Formula Values: 7.0; Formula Ptg: 7.0; Ptgs: A5 Index in Ptgs: 1 <br>Source Object Id: com.dataart.spreadsheetanalytics.engine.PoiProxyWorkbook@125ed27'},
  {id: '5050', label: 'D5\n9.0', color: '#31b0d5', title: 'Name: D5<br>Alias: null<br>Value: 9.0<br>Type: CELL_WITH_VALUE<br>Id: 5050<br>Formula Expression: Formula String: D5; Formula Values: 9.0; Formula Ptg: 9.0; Ptgs: D5 Index in Ptgs: 2 <br>Source Object Id: com.dataart.spreadsheetanalytics.engine.PoiProxyWorkbook@125ed27'},
  {id: '5051', label: ',\n[9.0, 7.0]', color: '#f0ad4e', title: 'Name: ,<br>Alias: null<br>Value: [9.0, 7.0]<br>Type: OPERATOR<br>Id: 5051<br>Formula Expression: Formula String: [9.0, 7.0]; Formula Values: [9.0, 7.0]; Formula Ptg: ; Ptgs:  Index in Ptgs: 3 <br>Source Object Id: null'}
                              ]);
  
  
  var edges = new vis.DataSet([
                               /* {from: id_a, to: id_b}, */
  {from: '5050', to: '5051'},
  {from: '5049', to: '5051'},
  {from: '5051', to: '5048'}
                              ]);