With no explanation, label each line with "O", "organization-government/governmentagency", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
During
this
period
,
the
DFA
once
again
pursued
development
policy
,
in
the
active
pursuit
of
opportunities
abroad
in
the
vital
areas
of
trade
,
investment
,
finance
,
technology
and
aid
.
During:O
this:O
period:O
,:O
the:O
DFA:organization-government/governmentagency
once:O
again:O
pursued:O
development:O
policy:O
,:O
in:O
the:O
active:O
pursuit:O
of:O
opportunities:O
abroad:O
in:O
the:O
vital:O
areas:O
of:O
trade:O
,:O
investment:O
,:O
finance:O
,:O
technology:O
and:O
aid:O
.:O