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 ":".
A
flip
of
a
coin
decided
the
ordering
of
their
names
.
A:O
flip:O
of:O
a:O
coin:O
decided:O
the:O
ordering:O
of:O
their:O
names:O
.:O