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 ":".
This
place
seems
to
have
been
a
burial
ground
for
soldiers
.
This:O
place:O
seems:O
to:O
have:O
been:O
a:O
burial:O
ground:O
for:O
soldiers:O
.:O