Ƙirƙirar wani nau'i mai mahimmanci na wannan jumla Ya yi bikin cika shekaru hamsin a shekara ta 2007.
Tabbas, wani nau'i mai rikitarwa na jumla shine "Ya yi bikin cika shekaru hamsin a shekara ta 2007 kuma a watan Yulin 2010 ya nuna sha'awar canzawa zuwa makarantar kimiyya. "