A person in a crowd taking a picture of people on a stage.
A person in a crowd is taking a picture of nature.
People on a stage are not considered nature.
exists e1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & in(x1,x2) & on(e1,x6) & n_stage(x6) & Theme(e1,x4) & Actor(e1,x3) & v_take(e1) & of(x4,x5) & n_people(x5) & n_picture(x4) & (x2 = x3) & n_crowd(x2) & n_person(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_take(e1) & of(x3,x4) & n_nature(x4) & n_picture(x3) & in(x1,x2) & n_crowd(x2) & n_person(x1))