With no explanation, label each line with "O", "other-astronomything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
brightest
star
in
Libra
,
it
is
a
green-tinged
star
of
magnitude
2.6
,
160
light-years
from
Earth
.
The:O
brightest:O
star:O
in:O
Libra:other-astronomything
,:O
it:O
is:O
a:O
green-tinged:O
star:O
of:O
magnitude:O
2.6:O
,:O
160:O
light-years:O
from:O
Earth:other-astronomything
.:O