Three boys are playing soccer.
There are people watching the boys play.
Boys can play soccer without people watching.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_soccer(x2) & n_boy(x1) & card_eq_3(x1))
exists p1 x1 x4 x5.(n_play(x4) & of(x4,x5) & n_boy(x5) & exists e1 x2 x3.((x1 = x2) & Theme(e1,x4) & Actor(e1,x3) & v_watch(e1) & (x2 = x3) & n_people(x2)))