<|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:
6.9 6.9 3.4
97 97 121
Ba
0.24 0.03 0.63
Ba
0.24 0.97 0.63
Hf
0.39 0.00 0.00
Zr
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
6.9 6.9 3.4
97 97 121
Ba
0.24 0.03 0.63
Ba
0.24 0.97 0.63
Hf
0.39 0.00 0.00
Zr
0.00 0.00 0.00
Identify the crystal system.