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 ":".
The
firing
room
used
during
the
simulation
is
the
same
control
room
where
real
launch
countdown
operations
are
executed
.
The:O
firing:O
room:O
used:O
during:O
the:O
simulation:O
is:O
the:O
same:O
control:O
room:O
where:O
real:O
launch:O
countdown:O
operations:O
are:O
executed:O
.:O