The young person reviews his photos while sitting on a bench.
The teenager is inside on the couch
The person can't be on a bench and also on a couch.
exists e1 e2 s1 x1 x2 x3.(n_photo(x2) & of(x2,x1) & n_male(x1) & n_person(x1) & a_young(s1) & Theme(s1,x1) & while(e1,e2) & on(e2,x3) & n_bench(x3) & Actor(e2,x1) & v_sit(e2) & Theme(e1,x2) & Actor(e1,x1) & v_review(e1))
exists p1 s1 x1 x2.(n_couch(x2) & n_teenager(x1) & a_inside(s1) & Manner(p1,s1) & on(x1,x2))