Q: Japan, leader, Akihito
A: The leader of Japan is Akihito.
Q: Acta Palaeontologica Polonica, publisher, Polish Academy of Sciences; Polish Academy of Sciences, regionServed, Poland
A: The Polish Academy of Sciences which serves Poland publishes the Acta Palaeontologica Polonica.
Q: Frank de Boer, club, Netherlands national football team
A: Frank de Boer played for the Netherlands national football team.
Q: Acta Palaeontologica Polonica, academicDiscipline, Paleobiology; Acta Palaeontologica Polonica, abbreviation, "Acta Palaeontol. Pol."
A:
Paleobiology is the academic discipline of Acta Palaeontologica Polonica which has the abbreviated name of Acta Palaeontol. Pol.