With no explanation, label each line with "product-game", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
``
Duck
Hunt
``
is
a
shooter
game
in
which
the
objective
is
to
shoot
moving
targets
on
the
television
screen
in
mid-flight
.
``:O
Duck:product-game
Hunt:product-game
``:O
is:O
a:O
shooter:O
game:O
in:O
which:O
the:O
objective:O
is:O
to:O
shoot:O
moving:O
targets:O
on:O
the:O
television:O
screen:O
in:O
mid-flight:O
.:O