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 ":".
As
part
of
a
general
improvement
program
,
the
railroad
replaced
many
of
its
original
wooden
stations
with
new
stone
buildings
designed
by
H.H
.
As:O
part:O
of:O
a:O
general:O
improvement:O
program:O
,:O
the:O
railroad:O
replaced:O
many:O
of:O
its:O
original:O
wooden:O
stations:O
with:O
new:O
stone:O
buildings:O
designed:O
by:O
H.H:O
.:O