With no explanation, label each line with "O", "other-medical", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Bevacizumab
can
also
be
combined
with
platinum
chemotherapy
,
a
combination
that
has
had
positive
preliminary
results
in
PFS
,
but
equivocal
results
regarding
overall
survival
.
Bevacizumab:other-medical
can:O
also:O
be:O
combined:O
with:O
platinum:other-medical
chemotherapy:other-medical
,:O
a:O
combination:O
that:O
has:O
had:O
positive:O
preliminary:O
results:O
in:O
PFS:organization-other
,:O
but:O
equivocal:O
results:O
regarding:O
overall:O
survival:O
.:O