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
tumulus
is
encompassed
in
a
park
today
.
The:O
tumulus:O
is:O
encompassed:O
in:O
a:O
park:O
today:O
.:O