Two boys and two girls jump as they have their photo taken.
4 children jump for a photo.
Two boys and two girls equals 4 so 4 children are jumping in the photo.
exists e1 p1 x1 x2 x3 x4.(exists e3 e2 x5.(Theme(e3,x4) & Actor(e3,x2) & v_have(e3) & Theme(e2,x5) & v_take(e2) & (x4 = x5)) & n_photo(x4) & of(x4,x2) & n_thing(x2) & n_thing(x2) & as(e1,p1) & Actor(e1,x1) & v_jump(e1) & n_girl(x3) & card_eq_2(x3) & n_boy(x2) & subset_of(x3,x1) & subset_of(x2,x1) & card_eq_2(x1))
exists x1 x2 x3.(a_topic(x1) & for(x1,x3) & n_photo(x3) & n_jump(x1) & of(x1,x2) & n_child(x2) & n_date(x1) & a_date_day_04(x1) & a_date_day_04(x1))