With no explanation, label each line with "O", "other-currency", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Behind
each
number
are
three
green
dollar
signs
and
a
red
``
no
dollar
sign
''
(
called
the
``
Stopper
''
)
.
Behind:O
each:O
number:O
are:O
three:O
green:O
dollar:other-currency
signs:O
and:O
a:O
red:O
``:O
no:O
dollar:other-currency
sign:O
'':O
(:O
called:O
the:O
``:O
Stopper:O
'':O
):O
.:O