Comment by sanxiyn

In "Adversarial Examples for Evaluating Reading Comprehension Systems" https://arxiv.org/abs/1707.07328, it was found that adding a single distracting sentence can lower F1 score of BiDAF (which is used in demo here) from 75.5% to 34.3% on SQuAD. In comparison, human performance goes from 92.6% to 89.2%.