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 ":".
Some
of
these
debris
can
still
be
found
today
littering
the
creek
bed
.
Some:O
of:O
these:O
debris:O
can:O
still:O
be:O
found:O
today:O
littering:O
the:O
creek:O
bed:O
.:O