Three men struggle to catch the ball before the others.
The five women are swimming
Three men are not identical to five women. A person catching the ball could not simultaneously be swimming.
exists p1 x1 x2 x3.(n_ball(x3) & a_topic(x1) & Topic(x1,p1) & exists e1.(before(e1,x1) & Theme(e1,x3) & Actor(e1,x1) & v_catch(e1)) & -(x1 = x1) & n_person(x1) & n_struggle(x1) & of(x1,x2) & n_man(x2) & card_eq_3(x1))
exists e1 x1.(n_woman(x1) & card_eq_5(x1) & Actor(e1,x1) & v_swim(e1))