Three boys and there father working in a yard.
Four males are outside.
Three boys and their father in a yard would equal four males outside.
exists s1 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & in(x2,x4) & n_yard(x4) & n_father(x2) & Time(x2,x3) & n_working(x3) & subset_of(x1,s1) & n_boy(x1) & card_eq_3(x1))
exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_male(x1) & card_eq_4(x1))