Fillmore Street is a street in San Francisco, California, named after American President Millard Fillmore which starts in the Lower Haight neighborhood, and travels northward through the Fillmore District and Pacific Heights and ends in the Marina District. It serves as the main thoroughfare and namesake for the Fillmore District neighborhood.
President Fillmore doesn't know how to pronounce Fillmore Street. 
President Fillmore wouldn't have trouble pronouncing Fillmore Street since it's the same name as his last name. There's no way he wouldn't know what the pronunciation was. No mention of the pronunciation is made in the statement, so the system probably couldn't take into consideration of that.