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 ":".
The
temperature
at
maximum
is
reasonably
well
known
at
6,900K
and
appears
to
decrease
during
the
fades
as
the
photosphere
is
obscured
by
condensing
dust
.
The:O
temperature:O
at:O
maximum:O
is:O
reasonably:O
well:O
known:O
at:O
6,900K:O
and:O
appears:O
to:O
decrease:O
during:O
the:O
fades:O
as:O
the:O
photosphere:O
is:O
obscured:O
by:O
condensing:O
dust:O
.:O