<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_instance(self, payload):
 """ Build an instance of ExecutionInstance :param dict payload: Payload response from the API :returns: twilio.rest.studio.v1.flow.execution.ExecutionInstance :rtype: twilio.rest.studio.v1.flow.execution.ExecutionInstance """

        return ExecutionInstance(self._version, payload, flow_sid=self._solution['flow_sid'], )