With no explanation, label each line with "product-other", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
ITL
MARS
(
Multi-purpose
Aiming
Reflex
Sight
)
is
a
gun
sight
that
combines
two
sighting
devices
,
a
reflex
sight
and
a
laser
sight
,
as
well
as
a
backup
iron
sight
.
The:O
ITL:product-other
MARS:product-other
(:O
Multi-purpose:O
Aiming:product-other
Reflex:product-other
Sight:product-other
):O
is:O
a:O
gun:O
sight:O
that:O
combines:O
two:O
sighting:O
devices:O
,:O
a:O
reflex:O
sight:O
and:O
a:O
laser:O
sight:O
,:O
as:O
well:O
as:O
a:O
backup:O
iron:O
sight:O
.:O