code: def example_3_0():
      happy_qa_distilbert = HappyQuestionAnswering()  # default
      happy_qa_albert = HappyQuestionAnswering(
          "ALBERT", "mfeb/albert-xxlarge-v2-squad2"
      )
      # good model when using with limited hardware
      happy_qa_bert = HappyQuestionAnswering(
          "BERT", "mrm8488/bert-tiny-5-finetuned-squadv2"
      )
      happy_qa_roberta = HappyQuestionAnswering(
          "ROBERTA", "deepset/roberta-base-squad2"
      )
  
imports: from happytransformer import HappyQuestionAnswering, QATrainArgs, QAEvalArgs, QATestArgs
label_desc: Use image node_id 1 for calling a global function with example usage: example_3_0() without return types