<|im_start|>system
Please reason step by step, and put your final answer within \boxed{}.<|im_end|>
<|im_start|>user
Given the following crystal representation:
3.1 3.1 6.7
90 90 90
Ni
0.57 0.57 0.25
Ni
0.57 0.57 0.48
Ge
0.00 0.00 0.00
Bi
0.00 0.00 0.36
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.1 3.1 6.7
90 90 90
Ni
0.57 0.57 0.25
Ni
0.57 0.57 0.48
Ge
0.00 0.00 0.00
Bi
0.00 0.00 0.36
Identify the crystal system.