A person in a green and white jacket and green pants is practicing on his snowboard.
One person practices on a snowboard.
is practicing means the same thing as practices.
exists e1 s1 s2 s3 x1 x2 x3 x4.(on(e1,x4) & n_snowboard(x4) & of(x4,x1) & n_male(x1) & Actor(e1,x1) & v_practice(e1) & in(x1,x2) & n_pants(x2) & a_green(s3) & Theme(s3,x2) & of(x2,x3) & n_jacket(x3) & a_white(s2) & Theme(s2,x2) & a_green(s1) & Theme(s1,x2) & n_person(x1))
exists x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_snowboard(x3) & Time(x1,x2) & n_practice(x2) & n_person(x1) & card_eq_1(x1))