<s>
Day	B-Application
of	I-Application
the	I-Application
Viper	I-Application
is	O
a	O
first-person	O
adventure	O
video	O
game	O
published	O
by	O
Accolade	O
in	O
1989	B-Application
.	O
</s>
<s>
As	O
the	O
Viper	O
robot	O
,	O
the	O
player	O
must	O
explore	O
five	O
abandoned	O
hi-tech	O
and	O
heavily	O
guarded	O
buildings	O
in	O
order	O
to	O
find	O
and	O
install	O
floppy	B-Device
disks	I-Device
.	O
</s>
