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 ":".
Additional
sensors
may
be
carried
at
the
ends
of
the
tail
booms
.
Additional:O
sensors:O
may:O
be:O
carried:O
at:O
the:O
ends:O
of:O
the:O
tail:O
booms:O
.:O