Definition: In this task you are given a list of triplets of the form [subject, predicate, object] and the output should be a question based on the triplets but with the subject and/or object replaced with blanks (represented using two or more consecutive underscores). Triplet values encompassed in [*] are special tokens that can be replaced with synonyms. The objective is to construct a question in a manner that (a) captures the facts specified in at least one of the triplets, and (b) ideally contains a limited number of blanks such that it is a well-formed question that is easy to answer. A blank can represent a single word or a phrase.
Input: [['Roman Catholic', '1900', '60.7%'], ['Roman Catholic', '1949', '69.8%'], ['Roman Catholic', '2011', '28.9%']]

Demographics of Budapest in _____ was _____ in 1900 ,1949 in 69.8% and 2011 in 28.9%