There are people at a fair boarding a ride, while two children are sitting on a bench waiting for people.
Two children wait on a bench while others board a ride.
Two children are called people. You are usually sitting on a bench when you wait for something.
exists p1 x1 e1 p2 x2 x3 x4 x5.((x1 = x2) & exists e2 e3 x6 x7 x8.(for(e2,e3) & for(e3,x8) & n_people(x8) & Actor(e3,x6) & v_wait(e3) & on(e2,x7) & n_bench(x7) & Actor(e2,x6) & v_sit(e2) & n_child(x6) & card_eq_2(x6)) & while(e1,p2) & Theme(e1,x5) & Actor(e1,x4) & v_board(e1) & n_ride(x5) & (x2 = x4) & at(x2,x3) & n_fair(x3) & n_people(x2))
exists e1 x1 x2 x3 x4 x5.(while(e1,x5) & -(x5 = x1) & n_person(x1) & n_person(x5) & on(e1,x4) & n_bench(x4) & Theme(e1,x2) & Actor(e1,x1) & v_wait(e1) & n_ride(x2) & of(x2,x3) & n_board(x3) & n_child(x1) & card_eq_2(x1))