    Sentence 1: The. institute - estimates  that last. year 15:7. per- cent of the|  average Supertiarket:”’5 - sales and. more|  than half. of. gross margin: went. to “pay  employee costs.    Sentence 2: The FMI. estimates ‘that  last -year: 15.7 percerit of the: average|  supermarket -‘s° sales’ ahd more than|  half. of gross ‘margin. went to- pay|  employee costs ,. including wages -and|  benefits: 5