We shouldn't deny the 'existence' of these problems. [=we shouldn't deny that these problems are present or real]
long before the country had 'come into existence' [=begun to exist; come to have actual being]
I owe my very 'existence' [='life'] to their courage. [=I am alive because of their courage]
(..) Dialogue: Marked=..,Default,NTP,!Effect,l know what it means! Dialogue: Marked=..,Default,NTP,!Effect,''The only Stone currently in existence\Nbelongs to Mr. Nicholas Flamel... Dialogue: Marked=..,Default,NTP,!Effect,...the noted alchemist who last year\Ncelebrated his th birthday.'' (..)2001 Harry Potter and the Sorcerer's Stone