A white vehicle traverses a dry terrain.
The car is slowly moving.
The vehicle doesn't necessarily have to be a car, there are a number of more suitable options for that terrain. And, it doesn't necessarily follow that the car is moving slowly on the dry terrain.
exists e1 s1 s2 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_traverse(e1) & n_terrain(x2) & a_dry(s2) & Theme(s2,x2) & n_vehicle(x1) & a_white(s1) & Theme(s1,x1))
exists e1 s1 x1.(n_car(x1) & a_slowly(s1) & Manner(e1,s1) & Actor(e1,x1) & v_move(e1))