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 ":".
It
is
a
candidate
Lambda
Boötis
star
,
suggesting
it
may
have
accreted
low-metallicity
circumstellar
gas
some
time
in
the
past
.
It:O
is:O
a:O
candidate:O
Lambda:other-astronomything
Boötis:other-astronomything
star:other-astronomything
,:O
suggesting:O
it:O
may:O
have:O
accreted:O
low-metallicity:O
circumstellar:O
gas:O
some:O
time:O
in:O
the:O
past:O
.:O