    Sentence 1: When was the Geraid  Ratner Athletics Center constructed?    Sentence 2: in 1955, Eero Saarinen  was contracted to develop a second  master’ plan, which led. to the  construction of buildings both north  and south of the Midway, including  the Laird BelloLaw Quadrangle {a  complex designed: by Saarinen); 2  series of arts buildings; a building  designed by Ludwig Mies van der  Rohe for the university's School of  Social © Service) Adrhinistration;, a  building «whichis ‘to’ -become ‘the  home of: the Harris School of Public