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: [['Enping', 'AREA_KM2', '1,698'], ['Enping', 'DENSITY_(/KM²)', '290.23'], ['Enping', 'POPULATION_(2010_CENSUS)', '492,814']]

_____'s density is 290.23 km2 (population 492,814 in an area of 1,698 km2).