scufl_graph cluster_sources Workflow Inputs cluster_sinks Workflow Outputs Remove_duplicate_strings Remove_duplicate_strings WORKFLOWINTERNALSINK_flattened_unique_output flattened_unique_output Remove_duplicate_strings->WORKFLOWINTERNALSINK_flattened_unique_output Flatten_list Flatten_list Flatten_list->Remove_duplicate_strings WORKFLOWINTERNALSOURCECONTROL WORKFLOWINTERNALSOURCE_input input WORKFLOWINTERNALSOURCE_input->Flatten_list WORKFLOWINTERNALSINKCONTROL