With no explanation, label each line with "O", "other-astronomything", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
It
was
discovered
by
William
Herschel
in
1787
,
and
lies
over
7,900
light
years
away
from
the
Sun
.
It:O
was:O
discovered:O
by:O
William:person-other
Herschel:person-other
in:O
1787:O
,:O
and:O
lies:O
over:O
7,900:O
light:O
years:O
away:O
from:O
the:O
Sun:other-astronomything
.:O