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
circles
three
quarters
of
the
mountain
,
passing
through
a
dozen
tunnels
along
the
way
.
It:O
circles:O
three:O
quarters:O
of:O
the:O
mountain:O
,:O
passing:O
through:O
a:O
dozen:O
tunnels:O
along:O
the:O
way:O
.:O