<prompt> Qedela umusho olandelayo: Udokotela waseBrithani uJohn Snow wasebenzisa umdwebo ofana nokaVoronoi ngo-1854 ukuze abonise indlela iningi labantu elafa ngayo  <response>: Ukuqubuka kwekholera eBroad Street kwakuseduze kakhulu nepompo yamanzi eseBroad Street enegciwane kunanoma iyiphi enye ipompo yamanzi. 