Domin bai yi nasara ba a Jamus, Zapf ya tafi Amurka.
Tabbas, wani nau'i mai rikitarwa na jumla shine "Saboda ba shi da nasara a Jamus, Zapf ya tafi Amurka, inda ya yi lacca game da rubutun kwamfuta, kuma an gayyace shi ya yi magana a Jami'ar Harvard a 1964. "