With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
The
event
also
marked
the
first
time
since
the
1999
event
to
have
two
sponsors
in
the
event
title
.
The:O
event:O
also:O
marked:O
the:O
first:O
time:O
since:O
the:O
1999:O
event:O
to:O
have:O
two:O
sponsors:O
in:O
the:O
event:O
title:O
.:O