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 ":".
More
than
half
of
the
area
is
covered
by
forests
.
More:O
than:O
half:O
of:O
the:O
area:O
is:O
covered:O
by:O
forests:O
.:O