This person, bundled up for the snow, slides down the hill on an intertube.
A person slides down a hill in a car.
A person would be sliding down in an intertube, not a car.
exists e1 e2 s1 x1 x2 x3 x4 x5.(n_hill(x4) & n_snow(x3) & n_person(x1) & down(e2,x4) & on(x4,x5) & n_intertube(x5) & Actor(e2,x1) & v_slide(e2) & a_up(s1) & Manner(e1,s1) & for(e1,x3) & Theme(e1,x2) & v_bundle(e1) & (x1 = x2))
exists e1 s1 x1 x2 x3.(in(e1,x3) & n_car(x3) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_slide(e1) & n_hill(x2) & n_person(x1))