With no explanation, label each line with "O", "other-astronomything", "person-scholar", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Pogson
believed
the
object
to
be
the
lost
Comet
Biela
,
but
subsequent
orbital
calculations
have
suggested
that
this
was
unlikely
.
Pogson:person-scholar
believed:O
the:O
object:O
to:O
be:O
the:O
lost:O
Comet:other-astronomything
Biela:other-astronomything
,:O
but:O
subsequent:O
orbital:O
calculations:O
have:O
suggested:O
that:O
this:O
was:O
unlikely:O
.:O