A man rides a bike through a course.
A man is walking through the woods.
A man is either rides a bike through a course or walking through the woods.
exists e1 x1 x2 x3.(through(e1,x3) & n_course(x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & n_man(x1))
exists e1 x1 x2.(n_wood(x2) & through(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_man(x1))