DependencyStructure outputGraph = new DependencyGraph(singleMalt.getSymbolTables());
for (int i = 0; i < tokens.length; i++) {
Iterator<ColumnDescription> columns = dataFormatInstance.iterator();
DependencyNode node = outputGraph.addDependencyNode(i+1);
String[] items = tokens[i].split("\t");
for (int j = 0; j < items.length; j++) {
if (columns.hasNext()) {
ColumnDescription column = columns.next();
if (column.getCategory() == ColumnDescription.INPUT && node != null) {