With no explanation, label each line with "O", "product-software", "person-scholar", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Since
then
,
Schulten
's
research
group
has
become
well
known
for
the
development
of
software
for
computational
structural
biology
,
including
the
molecular
dynamics
package
NAMD
and
the
visualization
software
VMD
.
Since:O
then:O
,:O
Schulten:person-scholar
's:O
research:O
group:O
has:O
become:O
well:O
known:O
for:O
the:O
development:O
of:O
software:O
for:O
computational:O
structural:O
biology:O
,:O
including:O
the:O
molecular:O
dynamics:O
package:O
NAMD:product-software
and:O
the:O
visualization:O
software:O
VMD:product-software
.:O