docs: def build_sample_ace_problem_breiman85(N=200):
      """Sample problem from Breiman 1985."""
      x_cubed = numpy.random.standard_normal(N)
      x = scipy.special.cbrt(x_cubed)
      noise = numpy.random.standard_normal(N)
      y = numpy.exp((x ** 3.0) + noise)
      return [x], y