Suppose John Paul II  was the first non-Italian Pope in exactly 600 years, so other things being equal, his successor would presumably be Italian.
Can we infer that "After 600 years on the dot, John Paul II became the first pope who was not of Italian descent."? Yes, no, or maybe?
Suppose John Paul II  was the first non-Italian Pope in exactly 600 years, so other things being equal, his successor would presumably be Italian. Can we infer that "After 600 years on the dot, John Paul II became the first pope who was not of Italian descent."? Yes, no, or maybe?