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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 _clean(self, t, capitalize=None):
 """Convert to normalized unicode and strip trailing full stops."""

        if self._from_bibtex:
            t = latex_to_unicode(t, capitalize=capitalize)
        t = ' '.join([el.rstrip('.') if el.count('.') == 1 else el for el in t.split()])
        return t