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 ":".
Thus
,
CpG
island
hyper/hypo-methylation
in
the
promoters
of
DNA
repair
genes
are
likely
central
to
progression
to
cancer
.
Thus:O
,:O
CpG:O
island:O
hyper/hypo-methylation:O
in:O
the:O
promoters:O
of:O
DNA:other-biologything
repair:other-biologything
genes:other-biologything
are:O
likely:O
central:O
to:O
progression:O
to:O
cancer:O
.:O