<|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:
6.2 6.2 6.2
144 139 55
Y
0.00 0.00 0.46
Zn
0.89 0.00 0.78
Zn
0.00 0.13 0.68
Br
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
6.2 6.2 6.2
144 139 55
Y
0.00 0.00 0.46
Zn
0.89 0.00 0.78
Zn
0.00 0.13 0.68
Br
0.00 0.00 0.00
Identify the crystal system.