Man in wheelchair is assisted in boarding the subway by a services employee.
Two people are jumping hurdles.
Either there are multiple or one subjects. One cannot be jumping hurdles while being assisted in a wheelchair.
exists e2 e1 x1 x2 x3 x4 x5.(n_subway(x5) & in(e1,e2) & Theme(e2,x5) & Actor(e2,x1) & v_board(e2) & Actor(e1,x3) & n_employee(x3) & of(x3,x4) & n_service(x4) & Theme(e1,x1) & v_assist(e1) & in(x1,x2) & n_wheelchair(x2) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_jump(e1) & n_hurdle(x2) & n_people(x1) & card_eq_2(x1))