With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
was
n't
until
the
mid-1990s
that
both
UK
firms
changed
their
names
to
match
those
of
their
respective
international
organizations
.
It:O
was:O
n't:O
until:O
the:O
mid-1990s:O
that:O
both:O
UK:location-GPE
firms:O
changed:O
their:O
names:O
to:O
match:O
those:O
of:O
their:O
respective:O
international:O
organizations:O
.:O