The man is standing behind his opened back hatch of his vehicle.
The man is loading groceries into the car.
Just because the hatch is open doesn't mean the man is loading groceries.
exists e1 e2 s1 x1 x2 x3 x4 x5.(n_vehicle(x5) & of(x5,x1) & n_male(x1) & n_man(x1) & a_back(s1) & Manner(e2,s1) & Theme(e2,x4) & Actor(e2,x1) & v_open(e2) & of(x4,x5) & n_hatch(x4) & behind(e1,x3) & n_his(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2))
exists e1 x1 x2 x3.(n_car(x3) & n_man(x1) & into(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_load(e1) & n_grocery(x2))