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 ":".
Some
features
in
the
game
unlock
others
(
such
as
a
movie
)
by
finding
items
hidden
throughout
the
game
.
Some:O
features:O
in:O
the:O
game:O
unlock:O
others:O
(:O
such:O
as:O
a:O
movie:O
):O
by:O
finding:O
items:O
hidden:O
throughout:O
the:O
game:O
.:O