Bayan da aka gano man fetur a Leduc, Alberta, ta kasance daya daga cikin masu binciken ilimin geologists guda biyu da aka aiko a 1950 don kula da binciken.
Tabbas, wani nau'i mai rikitarwa na jumla shine "Bayan an sami man fetur a Leduc, Alberta, ta kasance ɗaya daga cikin masana ilimin ƙasa guda biyu da aka aiko a 1950 don lura da binciken, wanda ita ce mace ɗaya tilo da ta fita zuwa filin. "