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 ":".
It
is
roughly
25
miles
(
40
km
)
wide
.
It:O
is:O
roughly:O
25:O
miles:O
(:O
40:O
km:O
):O
wide:O
.:O