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 ":".
Sarvak
,
Kazhdomi
,
Godvan
,
and
Fahilan
are
productive
layers
of
the
field
.
Sarvak:O
,:O
Kazhdomi:O
,:O
Godvan:O
,:O
and:O
Fahilan:O
are:O
productive:O
layers:O
of:O
the:O
field:O
.:O