Sentence:  Nevertheless , there <WSD>are</WSD> notably frequent instances of deja vu , in which our recognition of an entirely novel event is a feeling of having lived through it before , a feeling which , though vague , withstands the verbal barrage from the most impressive corps of psychologists . 
Meaning of the word marked with <WSD> tags:  happen, occur, take place; this was during the visit to my parents' house"