A person riding in the back of one vehicle is looking down the road towards a yellow truck.
The person in the back of one vehicle is looking towards a green truck.
One truck is yellow and one is green.
exists e1 s1 x1 x2 x3 x4 x5 x6.(n_road(x5) & n_back(x3) & down(e1,x5) & towards(x5,x6) & n_truck(x6) & a_yellow(s1) & Theme(s1,x6) & Actor(e1,x1) & v_look(e1) & in(x1,x3) & of(x3,x4) & n_vehicle(x4) & card_eq_1(x4) & Time(x1,x2) & n_riding(x2) & n_person(x1))
exists e1 s1 x1 x2 x3 x4.(n_back(x2) & n_person(x1) & towards(e1,x4) & n_truck(x4) & a_green(s1) & Theme(s1,x4) & Actor(e1,x1) & v_look(e1) & in(x1,x2) & of(x2,x3) & n_vehicle(x3) & card_eq_1(x3))