With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
Most
bright
(
non-periodic
)
comets
were
referred
to
as
'The
Great
Comet
Of
...
'
the
year
in
which
they
appeared
.
Most:O
bright:O
(:O
non-periodic:O
):O
comets:O
were:O
referred:O
to:O
as:O
'The:O
Great:O
Comet:O
Of:O
...:O
':O
the:O
year:O
in:O
which:O
they:O
appeared:O
.:O