Load fragment to reduce memory usage.

scripts/app.py

@@ -198,11 +198,11 @@ def book_en ():
   first_word = 'a'
 
   if fragment == 0:
-    novel = os.path.join(basepath, '../data/emilia_english.txt')
+    novel = os.path.join(basepath, '../data/emilia_english_fragment.txt')
     author = 'Emilia Pardo Bazán' # Non breaking spaces
     title = 'The Swan of Vila Morta' # Non breaking spaces
   else:
-    novel = os.path.join(basepath, '../data/benito_english.txt')
+    novel = os.path.join(basepath, '../data/benito_english_fragment.txt')
     author = 'Benito Pérez Gáldos' # Non breaking spaces
     title = 'Marianela'