private void RelationalQueriesBgWorkerWork(object sender, DoWorkEventArgs doWorkEventArgs)
        {
            using (var writer = new StreamWriter(RqOutputFile))
            {
                using (var reader = new StreamReader(RqCases))
                {
                    var inputLines = reader.ReadToEnd();
                    var data       = Regex.Split(inputLines, "\r\n|\r|\n");
                    var tct        = data.Length;
                    int ct         = 0;
                    for (int i = 0; i < data.Length; i++)
                    {
                        ct++;
                        var queries             = data[i].Split(',');
                        var watch               = Stopwatch.StartNew();
                        HashSet <string> scaSet = new HashSet <string>();
                        var length              = _wordNet.GetSca(queries[0], queries[1], out scaSet);
                        watch.Stop();

                        {
                            var writeLine = $"{length},";
                            foreach (var sc in scaSet)
                            {
                                writeLine += $"{sc} ";
                            }
                            writeLine = writeLine.Remove(writeLine.LastIndexOf(" ", StringComparison.Ordinal), 1);
                            writer.WriteLine(writeLine);
                        }
                        _rqAvgList.Add(watch.ElapsedMilliseconds);
                        _bgWorker.ReportProgress(ct * 100 / (tct),
                                                 new object[] { ct, watch.ElapsedMilliseconds, $"Working..{ct} / {tct}" });
                    }
                }
                writer.Flush();
            }
        }