<|im_start|>system
Please reason step by step, and put your final answer within \boxed{}.<|im_end|>
<|im_start|>user
Given the following CIF representation:
data_Hf3As5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.97
_cell_length_b   7.97
_cell_length_c   7.97
_cell_angle_alpha   96.85
_cell_angle_beta   96.85
_cell_angle_gamma   139.58
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Hf3As5
_chemical_formula_sum   'Hf6 As10'
_cell_volume   308.15
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Hf  Hf10  1  0.0  0.0  0.13  1.0
  Hf  Hf11  1  0.0  0.0  0.38  1.0
  Hf  Hf12  1  0.78  0.51  0.0  1.0
  Hf  Hf13  1  0.51  0.78  0.75  1.0
  Hf  Hf14  1  0.07  0.78  0.0  1.0
  Hf  Hf15  1  0.22  0.51  0.75  1.0
  As  As0  1  0.29  0.0  0.38  1.0
  As  As1  1  0.0  0.29  0.38  1.0
  As  As2  1  0.76  0.22  0.0  1.0
  As  As3  1  0.52  0.07  0.75  1.0
  As  As4  1  0.76  0.36  0.75  1.0
  As  As5  1  0.52  0.93  0.0  1.0
  As  As6  1  0.93  0.05  0.0  1.0
  As  As7  1  0.36  0.24  0.75  1.0
  As  As8  1  0.36  0.76  0.0  1.0
  As  As9  1  0.93  0.52  0.75  1.0

What is the crystal system of this material?<|im_end|>
<|im_start|>assistant
Given the following CIF representation:
data_Hf3As5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.97
_cell_length_b   7.97
_cell_length_c   7.97
_cell_angle_alpha   96.85
_cell_angle_beta   96.85
_cell_angle_gamma   139.58
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Hf3As5
_chemical_formula_sum   'Hf6 As10'
_cell_volume   308.15
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Hf  Hf10  1  0.0  0.0  0.13  1.0
  Hf  Hf11  1  0.0  0.0  0.38  1.0
  Hf  Hf12  1  0.78  0.51  0.0  1.0
  Hf  Hf13  1  0.51  0.78  0.75  1.0
  Hf  Hf14  1  0.07  0.78  0.0  1.0
  Hf  Hf15  1  0.22  0.51  0.75  1.0
  As  As0  1  0.29  0.0  0.38  1.0
  As  As1  1  0.0  0.29  0.38  1.0
  As  As2  1  0.76  0.22  0.0  1.0
  As  As3  1  0.52  0.07  0.75  1.0
  As  As4  1  0.76  0.36  0.75  1.0
  As  As5  1  0.52  0.93  0.0  1.0
  As  As6  1  0.93  0.05  0.0  1.0
  As  As7  1  0.36  0.24  0.75  1.0
  As  As8  1  0.36  0.76  0.0  1.0
  As  As9  1  0.93  0.52  0.75  1.0

What is the crystal system of this material?