In English "uncle" means the father's brother and the mother's brother. but in Arabic there's a word for each uncle, "Khal" is the mother's brother and "Aam" is the father's brother. when Mohamed meet Jonas for the first time he said "Ana Khalek" (i'm your maternal uncle) but he should've said "Ana Aamek" (i'm your paternal uncle).
A poster for the movie Ranch of the Ruthless (1965) was seen in the theater in 1950s while this film haven't been released until 1965.