An artist creating a pottery while wearing an apron.
An artist is making a gift for his best friend.
That the artist is creating a pottery does not imply he is making a gift for his best friend.
exists e1 e2 x1 x2 x3 x4.(a_topic(x1) & while(e1,e2) & Theme(e2,x4) & Actor(e2,x2) & v_wear(e2) & n_apron(x4) & Theme(e1,x3) & Actor(e1,x2) & v_create(e1) & n_pottery(x3) & (x1 = x2) & n_artist(x1))
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & for(x2,x3) & n_friend(x3) & r_most(s1) & a_good(s1) & Theme(s1,x3) & of(x3,x1) & n_male(x1) & n_gift(x2) & n_artist(x1))