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
bay
is
strikingly
circular
and
very
deep
(
220
m
)
in
an
otherwise
irregular
and
shallow
lake
.
The:O
bay:O
is:O
strikingly:O
circular:O
and:O
very:O
deep:O
(:O
220:O
m:O
):O
in:O
an:O
otherwise:O
irregular:O
and:O
shallow:O
lake:O
.:O