code: def circuit_8(a, x):
      _ = [qml.RX(a, wires=0) for i in range(4)]
      _ = [qml.RX(x[i] * a, wires=1) for i in range(3)]
      return qml.expval(qml.PauliZ(0))
  
imports: from collections import OrderedDict
  import numpy
  import pytest
  import pennylane
  from pennylane import numpy
  from pennylane.fourier.qnode_spectrum import _process_ids, qnode_spectrum
  from pennylane.measurements import SampleMP, StateMP, VarianceMP
label_desc: Use image node_id 9 for calling a global function with example usage: circuit_8(a, x) and returns: qml