Input: Relationship: 'be part of', Argument/Subject 1: 'britain', Argument/Subject 2: 'europe'

Answer: Roman Catholicism is the chief religion of S and W Europe and the southern part of central Europe Protestantism is dominant in Great Britain Scandinavia and the northern part of Europe the Orthodox Eastern Church predominates in E and SE Europe and there are pockets of of Muslim predominance in the Balkan Peninsula and Transcaucasia .