code: def cluster_sample7():
      start_centers = [[-3.0], [2.5]]
      template_clustering(start_centers, SIMPLE_SAMPLES.SAMPLE_SIMPLE7)
  
imports: import random
  from pyclustering.samples.definitions import SIMPLE_SAMPLES, FCPS_SAMPLES, FAMOUS_SAMPLES
  from pyclustering.cluster import cluster_visualizer_multidim
  from pyclustering.cluster.center_initializer import kmeans_plusplus_initializer
  from pyclustering.cluster.fcm import fcm
  from pyclustering.utils import read_sample
  from pyclustering.utils import timedcall
label_desc: Use image node_id 8 for calling a global function with example usage: cluster_sample7() without return types