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
congregation
is
served
by
the
Rev
.
The:O
congregation:O
is:O
served:O
by:O
the:O
Rev:O
.:O