Dinosaurs existed.
We're not too sure if dragons did.
In other words,
Dragons exist in the "mind"
Dinosaurs exist in the museums. Dragons also exist in literature
and in scuplture. Not all dinosaurs are extinct.
Why does African literature exist?
Modern Africans are literate and want to write about their world and experiences, just like people from all other places.
Did Philippine literature exist even before the Spaniards came?
yes
Which place on earth there is vampire?
They are in the minds, literature and dreams of the people. But
in real they donot exist.