The kid is on a float in the snow.
A kid sits on a float in the snow.
The fact that the kid is on a float in the snow does not imply that a kid sits on a float in the snow.
exists p1 x1 x3.(n_snow(x3) & n_kid(x1) & exists x2.(on(x1,x2) & in(x2,x3) & n_float(x2)))
exists e1 x1 x2 x3.(n_snow(x3) & in(e1,x3) & on(e1,x2) & n_float(x2) & Actor(e1,x1) & v_sit(e1) & n_kid(x1))