This African-American man is talking on the phone.
A man is talking to his son on the pay phone
Not every man is African-American.
exists e1 s1 x1 x2.(n_phone(x2) & n_man(x1) & a_african-american(s1) & Theme(s1,x1) & on(e1,x2) & Actor(e1,x1) & v_talk(e1))
exists e1 x1 x2 x3 x4.(n_phone(x3) & of(x3,x4) & n_pay(x4) & on(e1,x3) & to(e1,x2) & n_son(x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_talk(e1) & n_man(x1))