With no explanation, label each line with "location-GPE", "building-other", "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Both
shows
took
place
at
the
National
Palace
of
Culture
in
Sofia
,
hosted
by
Neli
Atanasova
and
Dragomir
Draganov
.
Both:O
shows:O
took:O
place:O
at:O
the:O
National:building-other
Palace:building-other
of:building-other
Culture:building-other
in:O
Sofia:location-GPE
,:O
hosted:O
by:O
Neli:person-other
Atanasova:person-other
and:O
Dragomir:person-other
Draganov:person-other
.:O