Ƙirƙirar wani nau'i mai mahimmanci na wannan jumla Hasumiyar O'Brien ita ce hasumiyar dutse a kusa da tsakiyar tsakiyar dutsen.
Tabbas, wani nau'i mai rikitarwa na jumla shine "O'Brien's Tower wani hasumiya ne na dutse a kusa da tsakiyar tsakiyar dutsen da Sir Cornelius O'Brien ya gina, dan kabilar High King Brian Boru na Ireland, don burge mata baƙi. "