A man drives a large truck.
A truck driver is driving back to the warehouse.
Just because a man drives a truck it does not mean he is a truck driver or that he is driving back to the warehouse.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_truck(x2) & a_large(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2 x3.(n_warehouse(x3) & to(e1,x3) & r_back(e1) & Actor(e1,x1) & v_drive(e1) & n_driver(x1) & of(x1,x2) & n_truck(x2))