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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 get(self, sid):
 """ Constructs a ExecutionContext :param sid: Execution Sid. :returns: twilio.rest.studio.v1.flow.execution.ExecutionContext :rtype: twilio.rest.studio.v1.flow.execution.ExecutionContext """

        return ExecutionContext(self._version, flow_sid=self._solution['flow_sid'], sid=sid, )