Eight young men practicing soccer skills.
Eight semi pro players practice soccer.
There are eight men practicing soccer, it does not imply they are semi pro players, they could be amateurs.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_practice(e1) & n_skill(x3) & of(x3,x4) & n_soccer(x4) & (x1 = x2) & n_man(x1) & a_young(s1) & Theme(s1,x1) & card_eq_8(x1))
exists s1 s2 s3 x1 x2 x3.(n_soccer(x1) & of(x1,x3) & n_practice(x3) & of(x1,x2) & n_player(x2) & a_.(s3) & Theme(s3,x1) & a_pro(s2) & Theme(s2,x1) & a_semi(s1) & Theme(s1,x1) & card_eq_8(x1) & a_topic(x1))