diff --git a/lab_6_pipeline/pipeline.py b/lab_6_pipeline/pipeline.py
index 80de128..8fe2807 100644
--- a/lab_6_pipeline/pipeline.py
+++ b/lab_6_pipeline/pipeline.py
@@ -7,7 +7,8 @@
 import spacy_udpipe
 from networkx import DiGraph
 
-from core_utils.article.article import (Article, ArtifactType, get_article_id_from_filepath)
+from core_utils.article.article import (Article, ArtifactType, get_article_id_from_filepath,
+                                        split_by_sentence)
 from core_utils.article.io import from_raw, to_cleaned
 from core_utils.constants import ASSETS_PATH, UDPIPE_MODEL_PATH
 from core_utils.pipeline import (AbstractCoNLLUAnalyzer, CoNLLUDocument, LibraryWrapper,
diff --git a/requirements.txt b/requirements.txt
index f4e4751..f111cb1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,4 +7,3 @@ spacy-conll==3.4.0
 spacy-udpipe==1.0.0
 spacy==3.7.4
 stanza==1.8.2
-