Four people with scooters in front of a very large metal gate.
The group of people are waiting for a scooter convention to open.
Not all convention has a very large metal gate.
exists s1 x1 x2 x3 x4 x5.(a_topic(x1) & with(x1,x2) & in(x2,x3) & of(x3,x4) & n_gate(x4) & of(x4,x5) & n_metal(x5) & a_large(s1) & Theme(s1,x4) & r_very(x4) & n_front(x3) & n_scooter(x2) & n_people(x1) & card_eq_4(x1))
exists e1 p1 x1 x2 x3 x4.(n_group(x1) & for(e1,x3) & Topic(x3,p1) & exists e2.(Actor(e2,x3) & v_open(e2)) & n_convention(x3) & of(x3,x4) & n_scooter(x4) & Actor(e1,x1) & v_wait(e1) & of(x1,x2) & n_people(x2))