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 ":".
Using
four
independent
guns
instead
of
one
multi-barrelled
rotary
cannon
improves
reliability
.
Using:O
four:O
independent:O
guns:O
instead:O
of:O
one:O
multi-barrelled:O
rotary:O
cannon:O
improves:O
reliability:O
.:O