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 ":".
The
result
,
the
Class
25
4-8-4
Northern
type
condensing
loco­motive
,
can
be
considered
as
the
ultimate
in
SAR
non-articulated
steam
loco­motive
design
.
The:O
result:O
,:O
the:O
Class:product-train
25:product-train
4-8-4:product-train
Northern:product-train
type:O
condensing:O
loco­motive:O
,:O
can:O
be:O
considered:O
as:O
the:O
ultimate:O
in:O
SAR:product-train
non-articulated:O
steam:O
loco­motive:O
design:O
.:O