An elderly checks out the samples.
The person is looking at things
Checks out is an act of looking.
exists s1 x1 x2.(n_sample(x2) & a_topic(x1) & out(x1,x2) & n_check(x1) & a_elderly(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_person(x1) & at(e1,x2) & n_thing(x2) & Actor(e1,x1) & v_look(e1))