With no explanation, label each line with "O", "product-software", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
Verge
stated
that
OS
X
Mavericks
was
“
a
gentle
evolution
of
the
Mac
operating
system
”
.
The:O
Verge:O
stated:O
that:O
OS:product-software
X:product-software
Mavericks:product-software
was:O
“:O
a:O
gentle:O
evolution:O
of:O
the:O
Mac:product-software
operating:O
system:O
”:O
.:O