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 ":".
According
to
some
sources
,
the
chain
went
out
of
business
in
the
early
1980s
.
According:O
to:O
some:O
sources:O
,:O
the:O
chain:O
went:O
out:O
of:O
business:O
in:O
the:O
early:O
1980s:O
.:O