code: private String[] getLoadline(Pair<BrainRegion, BrainRegion> pair, int pmId) {
  
          BrainRegion br1 = pair.getKey();
          BrainRegion br2 = pair.getValue();
  
          return new String[] {
                  pmId + "",//
                  br1.getCoveredText().replaceAll("(\\r|\\n|\\t)", ""),
                  br1.getBegin() + "",
                  br1.getEnd() + "",//
                  br2.getCoveredText().replaceAll("(\\r|\\n|\\t)", ""),
                  br2.getBegin() + "", br2.getEnd() + "" };
      }
docs: `pubmed_id`,`region_1_name,`region_1_start`,`region_1_end`,`region_2_name
  `,` region_2_start`,`region_2_end`