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 ":".
Following
Mann
's
resignation
,
the
number
of
GPA
staff
dropped
from
more
than
250
to
four
.
Following:O
Mann:O
's:O
resignation:O
,:O
the:O
number:O
of:O
GPA:O
staff:O
dropped:O
from:O
more:O
than:O
250:O
to:O
four:O
.:O