Update app.py

app.py

@@ -5,12 +5,15 @@ from qa_model import *
 from bm25_utils import *
 from pairwise_model import *
 
+import nltk
+nltk.download('punkt')
+
+
 df_wiki_windows = pd.read_csv("./processed/wikipedia_chungta_cleaned.csv")
 df_wiki = pd.read_csv("./processed/wikipedia_chungta_short.csv")
 df_wiki.title = df_wiki.title.apply(str)
 
 
-
 entity_dict = json.load(open("./processed/entities.json"))
 new_dict = dict()
 for key, val in entity_dict.items():