question: What is the approximate area of the core of the City of London ?
answer: 1.12-square-mile ( 2.9 km2 )
turker_answer: The approximate area of the core of the City of London is 1.12-square-mile ( 2.9 km2 ) .
rule-based: The approximate area of the core of the City of London is 1.12-square-mile ( 2.9 km2 .