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 ":".
The
KGS
was
in
use
on
all
toll
roads
in
the
country
alongside
the
OGS
until
it
was
replaced
by
HGS
.
The:O
KGS:O
was:O
in:O
use:O
on:O
all:O
toll:O
roads:O
in:O
the:O
country:O
alongside:O
the:O
OGS:O
until:O
it:O
was:O
replaced:O
by:O
HGS:O
.:O