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
Society
is
led
by
an
eleven-member
board
of
trustees
,
elected
by
the
membership
to
three-year
terms
.
The:O
Society:O
is:O
led:O
by:O
an:O
eleven-member:O
board:O
of:O
trustees:O
,:O
elected:O
by:O
the:O
membership:O
to:O
three-year:O
terms:O
.:O