<|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 6.4
102 102 42
Y
0.71 0.00 0.47
Y
0.28 0.00 0.78
Tl
1.00 0.00 0.12
Zn
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
5.1 5.1 6.4
102 102 42
Y
0.71 0.00 0.47
Y
0.28 0.00 0.78
Tl
1.00 0.00 0.12
Zn
0.00 0.00 0.00
Identify the crystal system.