Ƙirƙirar wani nau 'i mai mahimmanci na wannan jumla An yi la'akari da misali na musamman don juyin halitta na gine-gine a cikin karni na goma sha tara a cikin birnin, François Coignet ya tsara hasumiya a kan buƙatar Khedive na Misira da Sudan, Ismail the Magnificent.
Tabbas, mafi mahimmancin jumlar ita ce "An yi la'akari da misali na musamman don ci gaban gine-gine a lokacin karni na sha tara a cikin birni, François Coignet ya gina hasumiya a cikin 1869 mako guda kafin ƙaddamar da tashar Suez don jagorantar jiragen ruwa da ke wucewa a cikin tashar. "