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]
(..) in the universe. It's not an exaggeration to say That if black holes did not exist, we wouldn't be here. We literally owe our existence to black holes. Narrator: The story's not over yet. There's still much more to be discovered About the mysterious objects (..)2010 TvShow: How the Universe Works Title: Black Holes Season: 1 Episode 2