code: def cluster_sample4():
      start_medians = [
          [1.5, 0.0],
          [1.5, 2.0],
          [1.5, 4.0],
          [1.5, 6.0],
          [1.5, 8.0],
      ]
      template_clustering(start_medians, SIMPLE_SAMPLES.SAMPLE_SIMPLE4)
  
imports: from pyclustering.samples.definitions import SIMPLE_SAMPLES, FCPS_SAMPLES
  from pyclustering.cluster import cluster_visualizer
  from pyclustering.cluster.kmedians import kmedians
  from pyclustering.utils import draw_clusters
  from pyclustering.utils import read_sample
  from pyclustering.utils import timedcall
label_desc: Use image node_id 5 for calling a global function with example usage: cluster_sample4() without return types