With no explanation, label each line with "product-other", "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Annie
and
Jackie
attempt
to
retrieve
the
stolen
warhead
from
the
shark
pool
(
so
that
they
can
return
it
to
the
police
)
,
but
Gregor
and
his
men
follow
them
,
leading
to
a
climactic
confrontation
underwater
.
Annie:person-other
and:O
Jackie:person-other
attempt:O
to:O
retrieve:O
the:O
stolen:O
warhead:product-other
from:O
the:O
shark:O
pool:O
(:O
so:O
that:O
they:O
can:O
return:O
it:O
to:O
the:O
police:O
):O
,:O
but:O
Gregor:person-other
and:O
his:O
men:O
follow:O
them:O
,:O
leading:O
to:O
a:O
climactic:O
confrontation:O
underwater:O
.:O