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
first
is
the
fall
in
the
price
of
oil
in
2014
.
The:O
first:O
is:O
the:O
fall:O
in:O
the:O
price:O
of:O
oil:O
in:O
2014:O
.:O