<s>
Jason	B-Application
's	I-Application
Gem	I-Application
is	O
a	O
computer	O
game	O
for	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
.	O
</s>
<s>
It	O
was	O
published	O
in	O
1985	B-Application
by	O
Mastertronic	O
and	O
written	O
by	O
Simon	O
White	O
.	O
</s>
