Between 1959 and 1962 approximately 200,000 Cubans, primarily professionals and affluent landowners, fled the country.
Professionals did not leave Cuba in significant numbers between 1959 and 1962.
mnli hypothesis: Professionals did not leave Cuba in significant numbers between 1959 and 1962. premise: Between 1959 and 1962 approximately 200,000 Cubans, primarily professionals and affluent landowners, fled the country.