Two boys, two girls, strapped in and ready for an amusement park ride.
They are going to ride a rollercoaster.
The amusement park ride the kids are on may not be a rollercoaster at all.
exists e2 e1 s1 s2 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & rel(x1,x2) & for(e2,s2) & for(s2,x5) & n_ride(x5) & of(x5,x7) & n_park(x7) & of(x5,x6) & n_amusement(x6) & Theme(s2,x4) & a_ready(s2) & Theme(e2,x4) & v_strap(e2) & (x2 = x4) & a_in(s1) & Manner(e1,s1) & Theme(e1,x3) & v_strap(e1) & (x2 = x3) & n_girl(x2) & card_eq_2(x2) & n_boy(x1) & card_eq_2(x1))
exists e1 p1 x1.(n_thing(x1) & Topic(e1,p1) & Actor(e1,x1) & v_go(e1) & exists e2 x2.(Theme(e2,x2) & Actor(e2,x1) & v_ride(e2) & n_rollercoaster(x2)))