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 ":".
Each
regional
fellowship
is
served
by
an
Executive
Secretary
.
Each:O
regional:O
fellowship:O
is:O
served:O
by:O
an:O
Executive:O
Secretary:O
.:O