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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 from_id(cls, id):
 """Load a `cls` entity and instantiate the Context it stores."""

        from furious.context import Context

        # TODO: Handle exceptions and retries here.
        entity = cls.get_by_id(id)
        if not entity:
            raise FuriousContextNotFoundError(
                "Context entity not found for: {}".format(id))

        return Context.from_dict(entity.context)