<|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:
4.4 4.4 4.4
131 131 70
Be
0.00 0.00 0.00
Si
0.00 0.78 0.79
Si
0.78 0.00 0.79
Ni
0.00 0.00 0.58
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
4.4 4.4 4.4
131 131 70
Be
0.00 0.00 0.00
Si
0.00 0.78 0.79
Si
0.78 0.00 0.79
Ni
0.00 0.00 0.58
Identify the crystal system.