With no explanation, label each line with "O", "event-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
entered
the
competition
at
the
51st
Venice
International
Film
Festival
.
It:O
entered:O
the:O
competition:O
at:O
the:O
51st:event-other
Venice:event-other
International:event-other
Film:event-other
Festival:event-other
.:O