Several people practicing the sport of curling on an ice rink.
Someone is pushing the stone while another person sweeps with the broom.
Just because several people are practicing curling doesn't mean someone is pushing the stone and another person sweeps with the broom.
exists e2 e1 s1 x1 x2 x3 x4 x5 x6.(n_sport(x3) & a_topic(x1) & Theme(e2,x3) & Actor(e2,x2) & v_practice(e2) & on(e1,x5) & n_rink(x5) & of(x5,x6) & n_ice(x6) & Actor(e1,x4) & v_curl(e1) & (x3 = x4) & (x1 = x2) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists e1 p1 x1 x2 x4.(n_broom(x4) & n_stone(x2) & exists e2 x3.(with(e2,x4) & Actor(e2,x3) & v_sweep(e2) & n_person(x3) & -(x3 = x1)) & n_person(x1) & while(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_push(e1) & n_person(x1))