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 ":".
This
occurs
in
a
highly
basic
region
of
the
protein
.
This:O
occurs:O
in:O
a:O
highly:O
basic:O
region:O
of:O
the:O
protein:O
.:O