the city of Lucena, which is eligible to vote for provincial officials, still forms part of the province of Quezon's 2nd Sangguniang Panlalawigan district, which is coterminous with the 2nd congressional district of Quezon. General lack of distinction for independent cities, for practical purposes: Many government agencies, as well as Philippine society in general, still continue to classify many independent cities outside Metro Manila as part of provinces due to historical and cultural ties, especially if these cities were once or currently socio-economic and cultural capitals of the provinces to which they once belonged. Furthermore, most maps of the Philippines showing provincial boundaries almost never separate independent cities from the provinces in which they are geographically located, for cartographic convenience. Despite being first-level administrative divisions (i.e., on the same level as provinces, as stated in Section 25 of the LGC), independent cities are still treated by many to be on the same level as municipalities and component cities (second-level administrative divisions) for educational convenience and simplicity. A component city, while enjoying relative autonomy on some matters compared to a regular municipality, is still considered part of a province. However, there are several sources of confusion: Some component cities form their own congressional representation, separate from their province. The representation of a city in the House of Representatives (or lack thereof) is not a criterion for independence from a province, as Congress is the national legislative body and is part of the national (central) government. Despite Antipolo, Biñan and San Jose del Monte having their own representatives in Congress, they are still component cities of Rizal, Laguna, and Bulacan, respectively, as their respective charters specifically converted them into component cities and have no provision stating a severance in relations with their respective provincial governments. Being part of an administrative region different from the province: Isabela City functions as a component city of Basilan: its tax revenues are shared with the provincial government, its residents are eligible to both vote and run for provincial offices, and it is served by the provincial government and the Sangguniang Panlalawigan of Basilan with regard to provincially devolved services. However, by opting out of joining the Bangsamoro Autonomous Region in Muslim Mindanao (BARMM), Isabela City's residents are ineligible to vote and run for regional offices of the Bangsamoro Parliament, unlike the rest of Basilan. Regional services provided to Isabela City come from offices in Region IX