update requirements

model/model/question_generator.py

@@ -4,7 +4,7 @@ import collections
 
 import benepar
 ### Run this the first time if benepar_en3 is not yet downloaded
-# benepar.download('benepar_en3')
+benepar.download('benepar_en3')
 
 def find_word(tree, kind, parents=None):
     if parents is None:
@@ -191,4 +191,4 @@ class QuestionGenerator:
                                             tree_to_str(np, make_indeterminate).lower()))
                 except Exception as e:
                     print(e)
-        return questions
+        return questions