Bug fixed.

combo/predict.py

@@ -10,6 +10,7 @@ from allennlp.data import tokenizers
 from allennlp.predictors import predictor
 from overrides import overrides
 
+from combo import data
 from combo.data import sentence2conllu, tokens2conllu, conllu2sentence
 from combo.utils import download, graph, lambo