An ice cream truck is driving down the street.
An ice cream truck is parked on the street.
truck that is parked can not be driving down the street at the same time.
exists e1 s1 x1 x2 x3 x4.(n_street(x4) & a_down(s1) & Manner(e1,s1) & Theme(e1,x4) & Actor(e1,x1) & v_drive(e1) & n_truck(x1) & of(x1,x3) & n_cream(x3) & of(x1,x2) & n_ice(x2))
exists e1 x1 x2 x3 x4.(n_street(x4) & on(e1,x4) & Theme(e1,x1) & v_park(e1) & n_truck(x1) & of(x1,x3) & n_cream(x3) & of(x1,x2) & n_ice(x2))