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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def split_sentences_regex(text):
 """ Use dead-simple regex to split text into sentences. Very poor accuracy. ['Hello World.', "I'm I.B.M.'s Watson.", '--Watson'] """

    parts = regex.split(r'([a-zA-Z0-9][.?!])[\s$]', text)
    sentences = [''.join(s) for s in zip(parts[0::2], parts[1::2])]
    return sentences + [parts[-1]] if len(parts) % 2 else sentences