A scuba diver photographing a tortoise underwater.
a cat taking a photo
A scuba diver and a cat cannot both be taking a photo.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_photograph(e1) & n_underwater(x4) & of(x4,x5) & n_tortoise(x5) & (x1 = x3) & n_diver(x1) & of(x1,x2) & n_scuba(x2))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_take(e1) & n_photo(x3) & (x1 = x2) & n_cat(x1))