A man and two children, all in black jackets, walk across the street.
A father and his two sons are dressed alike.
Father and sons need not dress alike.
exists x1 x2 x6.(n_street(x6) & a_topic(x1) & all x3.(n_thing(x3) -> exists s1 x4 x5.(rel(x1,x3) & in(x3,x4) & rel(x4,x5) & across(x5,x6) & n_walk(x5) & n_jacket(x4) & a_black(s1) & Theme(s1,x4))) & n_child(x1) & card_eq_2(x1) & of(x1,x2) & n_man(x2))
exists e1 s1 x1 x2 x3.(a_alike(s1) & Manner(e1,s1) & Theme(e1,x1) & v_dress(e1) & subset_of(x3,x1) & n_son(x3) & card_eq_2(x3) & of(x3,x2) & n_male(x2) & subset_of(x2,x1) & n_father(x2))