With no explanation, label each line with "O", "other-biologything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
is
uncertain
whether
inserting
wound
drainage
after
groin
lymph
nodes
dissection
can
reduce
complications
such
as
seroma
,
haematoma
,
wound
dehiscence
,
and
wound
infection
.
It:O
is:O
uncertain:O
whether:O
inserting:O
wound:O
drainage:O
after:O
groin:other-biologything
lymph:other-biologything
nodes:other-biologything
dissection:O
can:O
reduce:O
complications:O
such:O
as:O
seroma:O
,:O
haematoma:O
,:O
wound:O
dehiscence:O
,:O
and:O
wound:O
infection:O
.:O