Four people are sitting outside a white vehicle in front of several items.
Four people sitting outside.
The sentence is simply repeating what has already been said, there are four people sitting outside.
exists e1 s1 s2 x1 x2 x3 x4.(outside(e1,x2) & in(x2,x3) & of(x3,x4) & n_item(x4) & a_several(s2) & Theme(s2,x4) & n_front(x3) & n_vehicle(x2) & a_white(s1) & Theme(s1,x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_4(x1))
exists e1 p1 x1 x2.(a_topic(x1) & exists s1.(Theme(s1,x2) & a_outside(s1)) & Topic(e1,p1) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1) & card_eq_4(x1))