<|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:
6.3 6.3 6.3
147 147 46
Al
0.00 0.00 0.11
As
0.00 0.00 0.51
Pb
0.00 0.00 0.53
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
6.3 6.3 6.3
147 147 46
Al
0.00 0.00 0.11
As
0.00 0.00 0.51
Pb
0.00 0.00 0.53
Identify the crystal system.