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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 sort(self):
 """ return beam-labelings, sorted by probability """

        beams = [v for (_, v) in self.entries.items()]
        sortedBeams = sorted(beams, reverse=True, key=lambda x: x.prTotal*x.prText)
        return [x.labeling for x in sortedBeams]