Person standing upon a log in the forest.
The man is riding his motorcycle through the woods.
There can be either standing or riding. can't do same at a time.
exists x1 x2 x3 x4.(n_forest(x4) & a_topic(x1) & upon(x1,x3) & in(x3,x4) & n_log(x3) & n_standing(x1) & (x1 = x2) & ne_nam_person(x2))
exists e1 x1 x2 x3.(n_wood(x3) & n_motorcycle(x2) & of(x2,x1) & n_male(x1) & n_man(x1) & through(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1))