Ƙirƙirar wani nau'i mai mahimmanci na wannan jumla Billy an haife shi tare da ciwon zuciya na tetralogy na Fallot (TOF), wanda aka fara gano shi ta hanyar likita lokacin da yake da sa'o'i uku.
Tabbas, wani nau'i mai rikitarwa na jumla shine "An haifi Billy tare da yanayin zuciya na tetralogy of Fallot (TOF), wanda zai buƙaci ya yi aiki aƙalla sau uku a cikin rayuwarsa, wanda aka yi lokacin da yake kwana uku".