A backhoe is digging a trench outside of a building.
A backhoe is parked next to a truck.
digging and paked are different
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_dig(e1) & of(x3,x4) & n_building(x4) & outside(x2,x3) & n_thing(x3) & n_trench(x2) & n_backhoe(x1))
exists e1 x1 x2.(to(e1,x2) & n_truck(x2) & r_next(e1) & Theme(e1,x1) & v_park(e1) & n_backhoe(x1))