Three football players are in action on the field
Three people are football players.
Football players are people.
exists p1 x1 x2 x4.(n_field(x4) & exists x3.(in(x1,x3) & on(x3,x4) & n_action(x3)) & n_player(x1) & of(x1,x2) & n_football(x2) & card_eq_3(x1))
exists p1 x1.(exists x2 x3.((x1 = x2) & n_player(x2) & of(x2,x3) & n_football(x3)) & n_people(x1) & card_eq_3(x1))