A man on a red dirt bike drives in the mud, covered in spray.
A man on a dirt bike is on a track.
The track could be dirt, mud, gravel, asphalt, or anything.
exists e1 s1 x1 x2 x3 x4 x5 x6.(n_mud(x5) & in(e1,x6) & n_spray(x6) & Theme(e1,x1) & v_cover(e1) & on(x1,x2) & in(x2,x5) & n_drive(x2) & of(x2,x4) & n_bike(x4) & of(x2,x3) & n_dirt(x3) & a_red(s1) & Theme(s1,x2) & n_man(x1))
exists p1 x1 x2 x3.(exists x4.(on(x1,x4) & n_track(x4)) & on(x1,x2) & n_bike(x2) & of(x2,x3) & n_dirt(x3) & n_man(x1))