With no explanation, label each line with "location-GPE", "O", "building-restaurant", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
restaurant
was
named
``
RPM
Italian
``
,
and
it
opened
in
February
2012
in
Chicago
's
River
North
District
.
The:O
restaurant:O
was:O
named:O
``:O
RPM:building-restaurant
Italian:building-restaurant
``:O
,:O
and:O
it:O
opened:O
in:O
February:O
2012:O
in:O
Chicago:location-GPE
's:O
River:location-GPE
North:location-GPE
District:location-GPE
.:O