With no explanation, label each line with "O", "organization-other", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
After
the
townhouse
explosion
,
the
government
actively
sought
to
apprehend
Mark
Rudd
and
twelve
other
members
of
the
Weather
Underground
Organization
(
WUO
)
.
After:O
the:O
townhouse:O
explosion:O
,:O
the:O
government:O
actively:O
sought:O
to:O
apprehend:O
Mark:person-other
Rudd:person-other
and:O
twelve:O
other:O
members:O
of:O
the:O
Weather:organization-other
Underground:organization-other
Organization:organization-other
(:O
WUO:organization-other
):O
.:O