This work analyzes the understanding of pretrained language models of factual and commonsense knowledge stored in negated statements. To this end, we introduce the negated LAMA dataset. We construct it by simply inserting negation elements (e.g., “not”) in LAMA cloze statement (e.g., “The theory of relativity was not developed by [MASK].”). 
 Question: How did they extend LAMA evaluation framework to focus on negation?
To this end, we introduce the negated LAMA dataset. We construct it by simply inserting negation elements (e.g., “not”) in LAMA cloze statement