Three individuals are visible participating in the sport of fencing while two spectators watch from behind.
The people are watching the fencers.
People watching refers to two spectators. Fencers  refers to three individuals  participating in the sport of fencing.
exists e2 e1 p1 x1 x2 x3 x4 x5.(n_sport(x5) & from(e2,x4) & n_behind(x4) & Theme(e2,x3) & Actor(e2,x1) & v_watch(e2) & n_thing(x3) & exists e4 e3 x6 x7.(in(e3,x5) & while(e4,x7) & n_spectator(x7) & card_eq_2(x7) & Actor(e4,x6) & v_fence(e4) & (x5 = x6) & Actor(e3,x2) & v_participate(e3)) & Topic(e1,p1) & Actor(e1,x2) & v_visible(e1) & (x1 = x2) & n_individual(x1) & card_eq_3(x1))
exists e1 x1 x2.(n_fencer(x2) & n_people(x1) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1))