Before revision:  Our contributions are as follows . i) We outperform BERT on cloze-style QA by large margins without any further training. ii) We show that BERT often identifies the correct response category (e.g., central European city), but only kNN recovers the factually correct answer (e.g., " Vienna ")  .
After revision:  Our contributions are as follows : i) BERT-kNN outperforms BERT on cloze-style QA by large margins without any further training. ii) We show that BERT often identifies the correct response category (e.g., central European city), but only kNN recovers the factually correct answer (e.g., " Vienna ") .