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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 plot(self, entities: List[str]):
 """ Basic plot of a numerical sensor data. Parameters entities : a list of entities """


        ax = self._sensors_num_df[entities].plot(figsize=[12, 6])
        ax.legend(loc="center left", bbox_to_anchor=(1, 0.5))
        ax.set_xlabel("Date")
        ax.set_ylabel("Reading")
        return