Complex sentence: Gillani proposed the idea of collective leadership with the installment major parties of the four provinces in the government; objections raised by conservative PML-N was replaced with centrist, PML (Q).
Split into simpler sentences: Gillani proposed the idea of collective leadership with the installment major parties of the four provinces in the government. However, the conservative PML-N objected this idea who was replaced with centrist, PML (Q).