A man riding a motorbike kicks up dirt.
The man is riding off-road.
if the man is riding a motorbike and kicks up dirt, it is implied that he is riding off-road, as motorbikes are usually ridden off-road and the dirt implies that he is off the road.
exists e2 e1 s1 x1 x2 x3 x4.(a_up(s1) & Manner(e2,s1) & Theme(e2,x4) & Actor(e2,x1) & v_kick(e2) & n_dirt(x4) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_motorbike(x3) & (x1 = x2) & n_man(x1))
exists e1 p1 x1.(n_man(x1) & exists s1.(Theme(s1,x1) & a_off-road(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_ride(e1))