Passage: São Tomé and Príncipe (; Portuguese: [sɐ̃w̃ tuˈmɛ i ˈpɾĩsɨpɨ]), officially the Democratic Republic of São Tomé and Príncipe, is an island country in the Gulf of Guinea, off the western equatorial coast of Central Africa. It consists of two archipelagos around the two main islands of São Tomé and Príncipe, about 140 kilometres (87 miles) apart and about 250 and 225 kilometres (155 and 140 miles) off the northwestern coast of Gabon, respectively.

Question: What is São Tomé and Príncipe's full proper name?
Democratic Republic of São Tomé and Príncipe