Update bionlp_shared_task_2009.py

bionlp_shared_task_2009.py

@@ -22,6 +22,9 @@ import datasets
 from .bigbiohub import kb_features
 from .bigbiohub import BigBioConfig
 from .bigbiohub import Tasks
+from .bigbiohub import parse_brat_file
+from .bigbiohub import brat_parse_to_bigbio_kb
+
 
 _LANGUAGES = ['English']
 _PUBMED = True