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 ":".
A
major
focus
along
the
trail
is
conifer
diversity
,
passing
32
species
in
.
A:O
major:O
focus:O
along:O
the:O
trail:O
is:O
conifer:O
diversity:O
,:O
passing:O
32:O
species:O
in:O
.:O