A boy sleeps on a car ride.
The boy's mother pets his head while his father drives them home.
A boy on a car ride does not imply his mother and father are with him.
exists e1 x1 x2 x3.(on(e1,x2) & n_ride(x2) & of(x2,x3) & n_car(x3) & Actor(e1,x1) & v_sleep(e1) & n_boy(x1))
exists e1 p1 x1 x2 x3 x4.(n_thing(x1) & n_father(x4) & of(x4,x1) & n_male(x1) & n_male(x1) & n_head(x3) & of(x3,x1) & n_mother(x2) & of(x2,x1) & n_boy(x1) & exists e2 x5.(Time(e2,x5) & n_home(x5) & Theme(e2,x1) & Actor(e2,x4) & v_drive(e2)) & while(e1,p1) & Theme(e1,x3) & Actor(e1,x2) & v_pet(e1))