<|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:
3.5 3.5 8.1
90 90 90
Ta
0.00 0.00 0.07
Ga
0.00 0.00 0.00
Bi
0.75 0.75 0.86
Bi
0.75 0.75 0.28
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.5 3.5 8.1
90 90 90
Ta
0.00 0.00 0.07
Ga
0.00 0.00 0.00
Bi
0.75 0.75 0.86
Bi
0.75 0.75 0.28
Identify the crystal system.