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 ":".
A
flow
diverter
can
be
used
,
but
risks
complications
.
A:O
flow:O
diverter:O
can:O
be:O
used:O
,:O
but:O
risks:O
complications:O
.:O