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
focus
on
the
European
Champions
Cup
.
It:O
focus:O
on:O
the:O
European:event-sportsevent
Champions:event-sportsevent
Cup:event-sportsevent
.:O