“Chicago-based Merchandise Mart Properties Inc… last year bought Art Chicago, the longest-running and once-leading contemporary art fair in the country, from its longtime producer. Its team will be at Art Basel Miami Beach — as it has been at other such fairs around the world — to try to make the contacts and find the elements that could return Art Chicago to international prominence… Part of the Mart’s plan is to host five concurrent commercial shows, of varying size and focus, in its complex along the Chicago River.”