With no explanation, label each line with "O", "person-artist/author", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Harket
has
collaborated
in
live
performances
and
in
studio
recordings
with
several
artists
.
Harket:person-artist/author
has:O
collaborated:O
in:O
live:O
performances:O
and:O
in:O
studio:O
recordings:O
with:O
several:O
artists:O
.:O