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
very
large
fire-grate
area
was
provided
,
which
gave
the
locomotive
free-steaming
qualities
;
its
grate
area
was
in
fact
larger
than
many
later
express
passenger
locomotives
.
A:O
very:O
large:O
fire-grate:O
area:O
was:O
provided:O
,:O
which:O
gave:O
the:O
locomotive:O
free-steaming:O
qualities:O
;:O
its:O
grate:O
area:O
was:O
in:O
fact:O
larger:O
than:O
many:O
later:O
express:O
passenger:O
locomotives:O
.:O