code: def majorityvote(line):
      count_pos = line.count("Positive")
      count_neu = line.count("Neutral")
      count_neg = line.count("Negative")
      dic = {
          "Positive": count_pos,
          "Neutral": count_neu,
          "Negative": count_neg,
      }
      max_value = max(dic.values())
      # make sure max_value is unique
      keys = [key for key, value in dic.items() if value == max_value]
      label = keys[0] if len(keys) == 1 else -1
      return label
  
file_path: espnet/egs2/swbd_sentiment/asr1/local/prepare_sentiment.py
imports: import argparse
  import math
  import os
  import re
label_desc: Use image node_id 2 for calling a global function with example usage: majorityvote(line) and returns: label