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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 join_tokens_to_sentences(tokens):
 """ Correctly joins tokens to multiple sentences Instead of always placing white-space between the tokens, it will distinguish between the next symbol and *not* insert whitespace if it is a sentence symbol (e.g. '.', or '?') Args: tokens: array of string tokens Returns: Joint sentences as one string """

    text = ""
    for (entry, next_entry) in zip(tokens, tokens[1:]):
        text += entry
        if next_entry not in SENTENCE_STOPS:
            text += " "

    text += tokens[-1]
    return text