Similarly, in Texas the performance management system is an integral part of agency and statewide planning structures, evaluation and decisionmaking processes, and accountability systems.
The Performance Management system is an integral part of the agency planning structures. 
mnli hypothesis: The Performance Management system is an integral part of the agency planning structures.  premise: Similarly, in Texas the performance management system is an integral part of agency and statewide planning structures, evaluation and decisionmaking processes, and accountability systems.