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 ":".
It
consisted
of
eight
teams
competing
in
three
rounds
of
best-of-three
series
.
It:O
consisted:O
of:O
eight:O
teams:O
competing:O
in:O
three:O
rounds:O
of:O
best-of-three:O
series:O
.:O