five hikers walk down the hillside.
The five hikers ran so fast down the hillside, that someone fell and got injured
The hikers can't walk and run at the same time.
exists e1 x1 x2.(n_hillside(x2) & down(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_hiker(x1) & card_eq_5(x1))
exists e1 p1 s1 x1 x2.(n_hillside(x2) & n_hiker(x1) & card_eq_5(x1) & down(e1,x2) & exists e3 e2 p2 x3 x4.(exists s2.(Theme(s2,x4) & a_injure(s2)) & Topic(e3,p2) & Actor(e3,x4) & v_get(e3) & n_person(x4) & Actor(e2,x3) & v_fall(e2) & n_person(x3)) & that(x2,p1) & r_so(e1) & a_fast(s1) & Manner(e1,s1) & Actor(e1,x1) & v_run(e1))