A young man wears a helmet and protective clothing as he races his dirt bike through a muddy track.
A man is riding a motorcyle through the ocean.
One cannot ride his motorcycle through the ocean.
(-x)
exists e1 x1 x2 x3.(n_ocean(x3) & through(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_motorcyle(x2) & n_man(x1))