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
design
reduces
both
drag
and
the
risk
of
ingesting
foreign
objects
,
but
increases
the
difficulty
of
maintenance
and
complicates
the
wing
structure
.
This:O
design:O
reduces:O
both:O
drag:O
and:O
the:O
risk:O
of:O
ingesting:O
foreign:O
objects:O
,:O
but:O
increases:O
the:O
difficulty:O
of:O
maintenance:O
and:O
complicates:O
the:O
wing:O
structure:O
.:O