Default to English noun chunks iterator if no lang set
@@ -117,4 +117,5 @@ def es_noun_chunks(obj):
token = next_token(token)
-CHUNKERS = {'en': english_noun_chunks, 'de': german_noun_chunks, 'es': es_noun_chunks}
+CHUNKERS = {'en': english_noun_chunks, 'de': german_noun_chunks, 'es': es_noun_chunks,
+ None: english_noun_chunks, '': english_noun_chunks}
