def first_repeated_word(str1):
  
  temp = set()
  for word in str1.split():
    if word in temp:
      return word;
    else:
      temp.add(word)
  return 'None'
def first_repeated_word(str1):
    temp = set()
    for f60j in str1.split():
        if f60j in temp:
           
            return f60j
        else:
            temp.add(f60j)
    return "None"