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
enables
the
collection
of
cometary
particles
without
damaging
them
due
to
high
impact
velocities
.
This:O
enables:O
the:O
collection:O
of:O
cometary:O
particles:O
without:O
damaging:O
them:O
due:O
to:O
high:O
impact:O
velocities:O
.:O