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 ":".
At
its
peak
,
the
luminosity
of
SN
1054
may
have
been
four
times
as
bright
as
Venus
,
and
it
remained
visible
in
daylight
for
23
days
and
was
visible
in
the
night
sky
for
653
days
.
At:O
its:O
peak:O
,:O
the:O
luminosity:O
of:O
SN:other-astronomything
1054:other-astronomything
may:O
have:O
been:O
four:O
times:O
as:O
bright:O
as:O
Venus:other-astronomything
,:O
and:O
it:O
remained:O
visible:O
in:O
daylight:O
for:O
23:O
days:O
and:O
was:O
visible:O
in:O
the:O
night:O
sky:O
for:O
653:O
days:O
.:O