code: def unpack_x_y_sample_weight(data):
      """Unpacks user-provided data tuple."""
      if not isinstance(data, tuple):
          return (data, None, None)
      elif len(data) == 1:
          return (data[0], None, None)
      elif len(data) == 2:
          return (data[0], data[1], None)
      elif len(data) == 3:
          return (data[0], data[1], data[2])
  
      raise ValueError("Data not understood.")
  
imports: import collections
  import functools
  import math
  import typing
  import jax
  import jax.numpy
  import numpy
  import six
  import typing_extensions
  from elegy import types, utils
label_desc: Use image node_id 5 for calling a global function with example usage: unpack_x_y_sample_weight(data) and returns: data,  None,  None, data,  None,  None, data,  data,  None, data,  data,  data