evidence: The Government of the Republic of China, is the national authority whose actual-controlled territory consists of main island of Taiwan (Formosa), Penghu, Kinmen, Matsu, and other island groups, collectively known as Taiwan Area or Free Area. A unitary state, the ROC government, under the current constitutional amendments, is run by a de facto semi-presidential system, consists of the presidency and five branches (Yuan): the Executive Yuan, Legislative Yuan, Judicial Yuan, Examination Yuan, and Control Yuan. The president is the head of state, with the premier as the head of government, currently ruled by the Democratic Progressive Party (DPP) since 2016. Since the 2005 amendments of the Additional Articles of the Constitution, the Legislative Yuan has been the de facto unicameral parliamentary body of the country.