With no explanation, label each line with "O", "product-train", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
A
typical
Class
168
consists
of
2+2
standard-class
seating
throughout
,
arranged
either
around
tables
or
in
airline-style
seating
with
pull-down
tables
.
A:O
typical:O
Class:product-train
168:product-train
consists:O
of:O
2+2:O
standard-class:O
seating:O
throughout:O
,:O
arranged:O
either:O
around:O
tables:O
or:O
in:O
airline-style:O
seating:O
with:O
pull-down:O
tables:O
.:O