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 ":".
Located
about
1300
light-years
away
,
it
is
the
closest
region
of
massive
star
formation
to
the
Earth
.
Located:O
about:O
1300:O
light-years:O
away:O
,:O
it:O
is:O
the:O
closest:O
region:O
of:O
massive:O
star:O
formation:O
to:O
the:O
Earth:other-astronomything
.:O