<prompt> Pedzisa mutsara unotevera: Mwaka we1959 Grand Prix wakaona Shelby achityaira Aston Martin DBR4 muDutch Grand Prix muna May, ichiteverwa ne  <response>: British Grand Prix paAintree muna July. Shelby akabva atyaira muPortugal Grand Prix muna Nyamavhuvhu, ichiteverwa neItaly Grand Prix munaGunyana. 