TASK DEFINITION: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
PROBLEM: There is no capital in the autonomous community right now , but the city of Vitoria-Gasteiz , in A lava , has the Basque Parliament , the Basque Government , and the house of the President of the Basque Autonomous Community ( the Palace of Ajuria Enea ) .

SOLUTION: Currently there is no official capital in the autonomous community , but the city of Vitoria-Gasteiz , in the province of A lava , is the de facto capital as the location of the Basque Parliament , the headquarters of the Basque Government , and the residence of the President of the Basque Autonomous Community ( the Palace of Ajuria Enea ) .

PROBLEM: Many grevilleas interbreed freely , and some specially picked hybrids have been grown for sale .

SOLUTION: Many grevilleas have a propensity to interbreed freely , and extensive hybridisation and selection of horticulturally desirable attributes has led to the commercial release of many named cultivars .

PROBLEM: Cerium ( IV ) oxide is an oxide of the rare earth metal cerium .

SOLUTION:
Cerium ( IV ) oxide , also known as ceric oxide , ceric dioxide , ceria , cerium oxide or cerium dioxide , is an oxide of the rare-earth metal cerium .