With no explanation, label each line with "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
For
its
second
season
,
in
order
to
increase
its
viewership
,
CBS
made
a
major
cast
change
in
the
show
's
format
.
For:O
its:O
second:O
season:O
,:O
in:O
order:O
to:O
increase:O
its:O
viewership:O
,:O
CBS:organization-company
made:O
a:O
major:O
cast:O
change:O
in:O
the:O
show:O
's:O
format:O
.:O