def get_clean_graph_generator_memory_repos():
artists_ngram_repo = MemoryEntityNgrams(base_entity_uri=base_entities_URI,
type_of_entity_collection=ARTIST_COLLECTION)
songs_ngram_repo = MemoryEntityNgrams(base_entity_uri=base_entities_URI,
type_of_entity_collection=SONG_COLLECTION)
entity_counter_repo = MemoryEntityCounter()
songs_ngram_repo.reset_collection()
artists_ngram_repo.reset_collection()
entity_counter_repo.reset_count()
return GraphGenerator(repo_songs=songs_ngram_repo,
repo_artist=artists_ngram_repo,
repo_counter=entity_counter_repo)
