Boy in red vest and blue and white trunks on wakeboard.
The boy is riding the wakeboard in the water.
The boy has vest with white trunks while using the wakeboard.
exists s1 s2 s3 s4 x1 x2 x3.(ne_nam_boy(s1) & a_topic(s1) & in(s1,x1) & on(x1,x3) & n_wakeboard(x3) & n_trunk(x1) & a_white(s4) & Theme(s4,x1) & a_blue(s3) & Theme(s3,x1) & of(x1,x2) & n_vest(x2) & a_red(s2) & Theme(s2,x1))
exists e1 x1 x2 x3.(n_water(x3) & n_wakeboard(x2) & n_boy(x1) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1))