A man drives a large truck.
A man is making a delivery in a truck.
Just because a man drives a truck it does not mean the man is making a delivery.
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.(in(e1,x3) & n_truck(x3) & Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & n_delivery(x2) & n_man(x1))