tripleset: [TABLECONTEXT] METROPOLITAN_AREA Berlin
tripleset: Berlin COUNTRY Germany
tripleset: [TABLECONTEXT] [TITLE] List of metropolitan areas by population
tripleset: Berlin OFFICIAL_POPULATION 5,097,712
target: Berlin is a metropolitan area in Germany with an official population of 5,097,712.
references: Berlin is a metropolitan area in Germany with an official population of 5,097,712.