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 ":".
the
angle
subtended
at
the
eye
by
the
edge
of
the
rainbow
and
the
rainbow
's
centre
is
42°
)
.
the:O
angle:O
subtended:O
at:O
the:O
eye:O
by:O
the:O
edge:O
of:O
the:O
rainbow:O
and:O
the:O
rainbow:O
's:O
centre:O
is:O
42°:O
):O
.:O