A girl and two boys stand up on a ride.
There are three people standing up on the ride.
There are three people standing up on the ride refers to a girl and two boys
exists e1 s1 x1 x2 x3.(on(e1,x3) & n_ride(x3) & a_up(s1) & Manner(e1,s1) & Actor(e1,x1) & v_stand(e1) & n_boy(x1) & card_eq_2(x1) & of(x1,x2) & n_girl(x2))
exists p1 x1 x4.(n_ride(x4) & exists e1 s1 x2 x3.((x1 = x2) & on(e1,x4) & a_up(s1) & Manner(e1,s1) & Actor(e1,x3) & v_stand(e1) & (x2 = x3) & n_people(x2) & card_eq_3(x2)))