A man is kicking a ball on an empty field.
A man is practicing his soccer skills.
Kicking is not practicing and all balls are not soccers.
exists e1 s1 x1 x2 x3.(on(e1,x3) & n_field(x3) & a_empty(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_kick(e1) & n_ball(x2) & n_man(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_practice(e1) & n_skill(x2) & of(x2,x3) & n_soccer(x3) & of(x2,x1) & n_male(x1) & n_man(x1))