two men climb a large rock.
People scale a boulder.
two  People climb scale a boulder a large rock.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_climb(e1) & n_rock(x2) & a_large(s1) & Theme(s1,x2) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_scale(e1) & n_boulder(x2) & n_people(x1))