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 ":".
Through
the
use
of
chromosome
engineering
,
he
has
constructed
cancer
cells
with
different
degrees
of
aneuploidy
,
and
he
has
found
how
aneuploidy
affects
tumor
suppression
and
metastasis
.
Through:O
the:O
use:O
of:O
chromosome:O
engineering:O
,:O
he:O
has:O
constructed:O
cancer:O
cells:O
with:O
different:O
degrees:O
of:O
aneuploidy:O
,:O
and:O
he:O
has:O
found:O
how:O
aneuploidy:O
affects:O
tumor:O
suppression:O
and:O
metastasis:O
.:O