The woman in the yellow jacket is riding on snow skates.
A man is cooking fish over an open flame.
One can not be riding on skates when one is cooking over a flame.
exists e1 s1 x1 x2 x3 x4.(n_jacket(x2) & a_yellow(s1) & Theme(s1,x2) & n_woman(x1) & on(e1,x3) & n_skate(x3) & of(x3,x4) & n_snow(x4) & Actor(e1,x1) & v_ride(e1) & in(x1,x2))
exists p1 x1.(exists s1 s2 x2 x3.((x1 = x2) & over(x2,x3) & n_flame(x3) & a_open(s2) & Theme(s2,x3) & n_fish(x2) & a_cooking(s1) & Theme(s1,x2)) & n_man(x1))