<|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:
5.1 5.1 4.7
90 90 90
K
0.00 0.00 0.00
Mg
0.00 0.54 0.35
Mg
0.54 0.00 0.35
Pb
0.54 0.54 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
5.1 5.1 4.7
90 90 90
K
0.00 0.00 0.00
Mg
0.00 0.54 0.35
Mg
0.54 0.00 0.35
Pb
0.54 0.54 0.00
Identify the crystal system.