diff --git a/unifier/views.py b/unifier/views.py
index bd98f98bc01b926a5edb591215d9d6afda8072a8..00212f3e339733256a231b3ebe3bb12f943b41e8 100644
--- a/unifier/views.py
+++ b/unifier/views.py
@@ -188,8 +188,9 @@ def get_examples(frames):
         for argument in frame.arguments.all():
             for connection in argument.example_connections.all():
                 example = connection.example
-                frame_ids, argument_ids, lu_ids, schema_ids, phrases, phrases_syntax
-                positions = set(), set(), set(), set(), set(), set(), set()
+                frame_ids, argument_ids, lu_ids = set(), set(), set()
+                schema_ids, phrases, phrases_syntax = set(), set(), set()
+                positions = set()
                 for connection in example.example_connections.all():
                     for argument in connection.arguments.all():
                         frame_ids.add(argument.frame.id)