Two people are climbing a portable rock wall
The people are being active.
There are other ways to be active, because they are active doesn't mean they are climbing rock.
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_climb(e1) & n_wall(x2) & of(x2,x3) & n_rock(x3) & a_portable(s1) & Theme(s1,x2) & n_people(x1) & card_eq_2(x1))
exists s1 x1.(n_people(x1) & Theme(s1,x1) & a_active(s1))