code: def main(z, x):
      """main function."""
      return syn_cnn_1_mf(z, x), cost(z)
  
imports: import numpy
  from dragonfly.nn.syn_nn_functions import cnn_syn_func1
label_desc: Use image node_id 4 for calling a global function with example usage: main(z, x) and returns: syn_cnn_1_mf,  cost