A motorcyclist is driving down a road on their motorbike.
A woman in a pickup truck, stopped in a dirt field.
No one can be both driving their motorbike and in a truck at the same time, just as no one can be driving down a road and stopped in a field at the same time.
exists e1 s1 x1 x2 x3.(on(e1,x3) & n_motorbike(x3) & of(x3,x1) & n_thing(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_road(x2) & n_motorcyclist(x1))
exists e1 x1 x2 x3 x4 x5.(in(e1,x4) & n_field(x4) & of(x4,x5) & n_dirt(x5) & Actor(e1,x1) & v_stop(e1) & in(x1,x2) & n_truck(x2) & of(x2,x3) & n_pickup(x3) & n_woman(x1))