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 ":".
Upon
these
works
he
mounted
four
small
swivel
guns
.
Upon:O
these:O
works:O
he:O
mounted:O
four:O
small:O
swivel:O
guns:O
.:O