With no explanation, label each line with "O", "event-sportsevent", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
officially
started
in
1978
when
the
Targa
Florio
transitioned
from
sportcar
to
rally
event
,
mostly
due
to
safety
concerns
.
It:O
officially:O
started:O
in:O
1978:O
when:O
the:O
Targa:event-sportsevent
Florio:event-sportsevent
transitioned:O
from:O
sportcar:O
to:O
rally:O
event:O
,:O
mostly:O
due:O
to:O
safety:O
concerns:O
.:O