Write SQL query to solve given problem: Give the coordinates of the buyer of R & A Plant Genetics from Benchmark Education.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T2.school_latitude, T2.school_longitude FROM resources AS T1 INNER JOIN projects AS T2 ON T1.projectid = T2.projectid WHERE T1.item_name = 'R & A Plant Genetics' AND T1.vendor_name = 'Benchmark Education'