input: 
  def create_bpmn_diagram_for_FOMDES():
      """Create a BPMN diagram for FOMDES process 1 using the bpmn_pgv library. The diagram should include clusters for Secretaría Ejecutiva, Presidencia, and Presupuesto/Administración, with specific tasks and edges defined within each cluster. Additionally, include nodes for SIGEFOMDES Administración and SISAC, and connect them to the appropriate clusters using dashed edges. Finally, save the diagram as a PNG file named "proc4.png" and a DOT file named "proc4.dot".
      >>> import pygraphviz as pgv
      >>> F = create_bpmn_diagram_for_FOMDES()
      >>> isinstance(F, pgv.AGraph)
      True
      """
  
output:     import pygraphviz as pgv
  
      F = pgv.AGraph(directed=True, rankdir='LR')
  
      # Define clusters
      F.add_subgraph([], name='cluster_Secretaría Ejecutiva', label='Secretaría Ejecutiva')
      F.add_subgraph([], name='cluster_Presidencia', label='Presidencia')
      F.add_subgraph([], name='cluster_Presupuesto/Administración', label='Presupuesto/Administración')
  
      # Add tasks to clusters
      F.add_node('Task1', label='Task 1', shape='box', style='filled', color='lightblue', cluster='cluster_Secretaría Ejecutiva')
      F.add_node('Task2', label='Task 2', shape='box', style='filled', color='lightblue', cluster='cluster_Presidencia')
      F.add_node('Task3', label='Task 3', shape='box', style='filled', color='lightblue', cluster='cluster_Presupuesto/Administración')
  
      # Add nodes for SIGEFOMDES Administración and SISAC
      F.add_node('SIGEFOMDES', label='SIGEFOMDES Administración', shape='box', style='dashed')
      F.add_node('SISAC', label='SISAC', shape='box', style='dashed')
  
      # Connect tasks and nodes
      F.add_edge('Task1', 'Task2', label='Edge 1')
      F.add_edge('Task2', 'Task3', label='Edge 2')
      F.add_edge('SIGEFOMDES', 'Task1', style='dashed')
      F.add_edge('SISAC', 'Task3', style='dashed')
  
      # Save the diagram
      F.draw('proc4.png', prog='dot')
      F.write('proc4.dot')
  
      return F