A photo of a ride at an amusement park on an overcast day.
The photo was of a roller coaster.
A photo of a ride doesn't imply photo of a roller coaster.
exists s1 x1 x2 x3 x4 x5.(a_topic(x1) & of(x1,x2) & at(x2,x3) & on(x3,x5) & n_day(x5) & a_overcast(s1) & Theme(s1,x5) & n_park(x3) & of(x3,x4) & n_amusement(x4) & n_ride(x2) & n_photo(x1))
exists p1 x1.(n_photo(x1) & exists x2 x3.(of(x1,x2) & n_coaster(x2) & of(x2,x3) & n_roller(x3)))