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 ":".
Throughout
the
length
of
about
60
km
,
the
region
is
fertile
.
Throughout:O
the:O
length:O
of:O
about:O
60:O
km:O
,:O
the:O
region:O
is:O
fertile:O
.:O