With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
Co-branding
emerged
as
a
growth
vehicle
in
the
late
1990s
and
involved
the
placement
of
two
(
or
more
)
restaurant
brands
within
a
single
unit
.
Co-branding:O
emerged:O
as:O
a:O
growth:O
vehicle:O
in:O
the:O
late:O
1990s:O
and:O
involved:O
the:O
placement:O
of:O
two:O
(:O
or:O
more:O
):O
restaurant:O
brands:O
within:O
a:O
single:O
unit:O
.:O