I am yet to learn more about verbs in 한극. The verb indicating existence or non-existence have been introduced first, these are -있어요 and -없어요 respectively. The dash before the verb indicates it cannot stand alone it should be preceeded by a word usually a noun.
This word ending is very striking as I usually hear them on songs and conversations in dramas and movies.
책이 있어요 –> there is a book
펜이 없어요 –> there is no pen