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 ":".
From
among
their
number
,
the
trustees
elect
the
Society
's
three
officers
–
president
,
treasurer
and
corporate
secretary
–
and
appoint
the
Society
's
historian
.
From:O
among:O
their:O
number:O
,:O
the:O
trustees:O
elect:O
the:O
Society:O
's:O
three:O
officers:O
–:O
president:O
,:O
treasurer:O
and:O
corporate:O
secretary:O
–:O
and:O
appoint:O
the:O
Society:O
's:O
historian:O
.:O