Complex sentence: La Union is a province of the Philippines located in the Ilocos Region or Region 1 in Luzon, whose capital is San Fernando City and borders Ilocos Sur to the north, Benguet to the east, and Pangasinan to the south.
Split into simpler sentences: La Union is a province of the Philippines located in the Ilocos Region or Region 1 in Luzon. Its capital is San Fernando City and borders Ilocos Sur to the north, Benguet to the east, and Pangasinan to the south.