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 ":".
Four
of
the
arches
span
43
feet
4
inches
,
while
the
fifth
and
central
arch
is
46
feet
2
inches
.
Four:O
of:O
the:O
arches:O
span:O
43:O
feet:O
4:O
inches:O
,:O
while:O
the:O
fifth:O
and:O
central:O
arch:O
is:O
46:O
feet:O
2:O
inches:O
.:O