diff --git a/internal/db/models/training_dataset.go b/internal/db/models/training_dataset.go
index fb95001..e0423fd 100644
--- a/internal/db/models/training_dataset.go
+++ b/internal/db/models/training_dataset.go
@@ -11,6 +11,7 @@ type TrainingDataset struct {
 	gorm.Model
 	Name                    string           `gorm:"type:varchar(255);not null;uniqueIndex"`
 	AODFiles                []jalien.AODFile `gorm:"serializer:json"`
+	IsONe                   bool
 	AnchorProdTimestampFrom time.Time
 	AnchorProdTimestampTo   time.Time
 	UserId                  uint
diff --git a/internal/handler/queue_handler.go b/internal/handler/queue_handler.go
index 978432f..12e402b 100644
--- a/internal/handler/queue_handler.go
+++ b/internal/handler/queue_handler.go
@@ -103,10 +103,14 @@ func (qh *QueueHandler) QueryTask(w http.ResponseWriter, r *http.Request) {
 	response := struct {
 		ID            uint
 		AODFiles      []jalien.AODFile
+		IsONe         bool
+		IsData        bool
 		Configuration interface{}
 	}{
 		ID:            tt.ID,
 		AODFiles:      tt.TrainingDataset.AODFiles,
+		IsONe:         tt.TrainingDataset.IsONe,
+		IsData:        false, // For now we don't use any real experimental data (simulated data only).
 		Configuration: tt.Configuration,
 	}
 
diff --git a/internal/service/training_dataset_service.go b/internal/service/training_dataset_service.go
index 97568a1..147479e 100644
--- a/internal/service/training_dataset_service.go
+++ b/internal/service/training_dataset_service.go
@@ -94,6 +94,16 @@ func (s *TrainingDatasetService) Create(td *models.TrainingDataset) error {
 	td.AnchorProdTimestampFrom = timestampFrom
 	td.AnchorProdTimestampTo = timestampTo
 
+	isONe, err := resolveDatasetIsONe(td.AODFiles, s.MonalisaService)
+	if err != nil {
+		var external *ErrExternalServiceTimeout
+		if errors.As(err, &external) {
+			return err
+		}
+		return InternalError("resolve training dataset IsONe", err)
+	}
+	td.IsONe = isONe
+
 	err = s.TrainingDataset.Create(td)
 
 	if err != nil {
@@ -154,3 +164,22 @@ func (s *TrainingDatasetService) FindAods(path string) ([]jalien.AODFile, error)
 
 	return aodFiles, nil
 }
+
+func resolveDatasetIsONe(aodFiles []jalien.AODFile, monalisaService IMonalisaService) (bool, error) {
+	runList, err := monalisaService.GetRunList()
+	if err != nil {
+		return false, mapMonalisaError("GetRunList", err)
+	}
+
+	for _, aod := range aodFiles {
+		if aod.LHCPeriod != "" {
+			desc := runList.TagToDesc[aod.LHCPeriod]
+			if strings.Contains(desc, "O-O") || strings.Contains(desc, "OO") ||
+				strings.Contains(desc, "Ne-Ne") || strings.Contains(desc, "NeNe") {
+				return true, nil
+			}
+		}
+	}
+
+	return false, nil
+}
diff --git a/test/integration/training_dataset_handler_test.go b/test/integration/training_dataset_handler_test.go
index d3e48c3..52e5057 100644
--- a/test/integration/training_dataset_handler_test.go
+++ b/test/integration/training_dataset_handler_test.go
@@ -173,7 +173,7 @@ func mockDatasetTimestampRange(ut *IntegrationTestUtils, period string, minRun,
 		TagToRuns: map[string][]uint64{
 			period: {minRun, maxRun},
 		},
-	}, nil).Once()
+	}, nil)
 	ut.CCDB.On("GetRunInformation", minRun).Return(&ccdb.RunInformation{
 		RunNumber: minRun,
 		SOR:       uint64(time.Now().Add(-time.Hour).UnixMilli()),
diff --git a/test/repository/training_dataset_repository_test.go b/test/repository/training_dataset_repository_test.go
index a8edb13..264de58 100644
--- a/test/repository/training_dataset_repository_test.go
+++ b/test/repository/training_dataset_repository_test.go
@@ -40,7 +40,7 @@ func TestTrainingDatasetRepository_Create(t *testing.T) {
 
 	mock.ExpectBegin()
 	mock.ExpectQuery(`INSERT INTO "training_datasets" (.+) RETURNING "id"`).
-		WithArgs(AnyTime(), AnyTime(), AnyTime(), trainingDataset.Name, marshalAODFiles(t, trainingDataset), AnyTime(), AnyTime(), 1).
+		WithArgs(AnyTime(), AnyTime(), AnyTime(), trainingDataset.Name, marshalAODFiles(t, trainingDataset), false, AnyTime(), AnyTime(), 1).
 		WillReturnRows(sqlmock.NewRows([]string{"id"}).AddRow(1))
 	mock.ExpectCommit()
 
diff --git a/test/repository/training_task_repository_test.go b/test/repository/training_task_repository_test.go
index 6776241..017667a 100644
--- a/test/repository/training_task_repository_test.go
+++ b/test/repository/training_task_repository_test.go
@@ -48,7 +48,7 @@ func TestTrainingTaskRepository_Create(t *testing.T) {
 
 	mock.ExpectBegin()
 	mock.ExpectQuery(`INSERT INTO "training_datasets" (.+) RETURNING "id"`).
-		WithArgs(AnyTime(), AnyTime(), AnyTime(), trainingDataset.Name, marshalAODFiles(t, trainingDataset), AnyTime(), AnyTime(), 1).
+		WithArgs(AnyTime(), AnyTime(), AnyTime(), trainingDataset.Name, marshalAODFiles(t, trainingDataset), false, AnyTime(), AnyTime(), 1).
 		WillReturnRows(sqlmock.NewRows([]string{"id"}).AddRow(1))
 	mock.ExpectQuery(`INSERT INTO "training_tasks" (.+) RETURNING "id"`).
 		WithArgs(AnyTime(), AnyTime(), AnyTime(), trainingTask.Name, trainingTask.Status, 1, 1, nil, marshalTrainingTaskConfig(t, trainingTask)).