query fix

src/Surveyor.py

@@ -1465,7 +1465,7 @@ class Surveyor:
         self.print_fn(conclusion_block)
         '''
         if query is None:
-            query = self.generate_title(' '.join([v for v in clustered_sections.values]))
+            query = self.generate_title(' '.join([v for v in clustered_sections.values()]))
 
         survey_file = 'A_Survey_on_' + query.replace(' ', '_') + '.txt'
         self.build_doc(clustered_sections, papers_standardized, query=query, filename=self.dump_dir + survey_file)