Complex sentence: In parliamentary systems of government, the term loyal opposition is a term applied collectively to the opposition parties in the legislature to indicate that the non-governing parties may oppose the actions of the sitting cabinet while remaining loyal to the source of the government's power.
Split into simpler sentences: In parliamentary systems of government, the loyal opposition is the opposition parties in the legislature. The word "loyal" indicating that the non-governing parties may oppose the actions of the sitting cabinet while remaining loyal to the source of the government's power.