code: def get_pipeline() -> Pipeline:
      third_level_one = PipelineNode("lda")
  
      second_level_one = PipelineNode(
          "qda", nodes_from=[third_level_one]
      )
      second_level_two = PipelineNode("qda")
  
      first_level_one = PipelineNode(
          "knn", nodes_from=[second_level_one, second_level_two]
      )
  
      root = PipelineNode(
          operation_type="logit", nodes_from=[first_level_one]
      )
      pipeline = Pipeline(root)
  
      return pipeline
  
imports: from fedot.core.pipelines.node import PipelineNode
  from fedot.core.pipelines.pipeline import Pipeline
  from golem.core.optimisers.graph import OptNode
label_desc: Use image node_id 1 for calling a global function with example usage: get_pipeline() and returns: pipeline