For instance, BIBREF16 and BIBREF17 showed that a hypothesis-only baseline performs better than chance due to cues on their lexical choice and sentence length. Similarly, BIBREF18 showed that NLI models tend to predict entailment for sentence pairs with a high lexical overlap. 
 Question: What are examples of these artifacts?
hypothesis-only baseline performs better than chance due to cues on their lexical choice and sentence length NLI models tend to predict entailment for sentence pairs with a high lexical overlap