A man in yellow rides a motocross bike down a dirt track in a forest.
A man is outdoors.
A man in yellow rides a motocross refers that he is outdoors.
exists x1.(all x3 x2.((n_bike(x2) & of(x2,x3) & n_motocross(x3)) -> exists s1 x4 x5 x6 x7.(a_topic(x1) & in(x1,x4) & down(x4,x5) & in(x5,x7) & n_forest(x7) & n_track(x5) & of(x5,x6) & n_dirt(x6) & for(x4,x2) & n_ride(x4) & a_yellow(s1) & Theme(s1,x4))) & n_man(x1))
exists p1 x1.(exists x2.((x1 = x2) & n_outdoors(x2)) & n_man(x1))