With no explanation, label each line with "O", "other-biologything", "person-scholar", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
the
1990s
Dr
.
Butel
discovered
the
role
of
P53
in
the
pathogenesis
of
SV40
and
oncogenesis
.
In:O
the:O
1990s:O
Dr:O
.:O
Butel:person-scholar
discovered:O
the:O
role:O
of:O
P53:other-biologything
in:O
the:O
pathogenesis:O
of:O
SV40:other-biologything
and:O
oncogenesis:O
.:O