The mountaintop is filled with snow.
The mountain is big
The mountain doesn't have to be big to be filled with snow.
exists e1 x1 x2.(n_mountaintop(x1) & with(e1,x2) & n_snow(x2) & Theme(e1,x1) & v_fill(e1))
exists s1 x1.(n_mountain(x1) & Theme(s1,x1) & a_big(s1))