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 ":".
Phase
1
of
the
project
,
costing
$
497
million
,
will
open
in
summer
2015
.
Phase:O
1:O
of:O
the:O
project:O
,:O
costing:O
$:O
497:O
million:O
,:O
will:O
open:O
in:O
summer:O
2015:O
.:O