A person skiing down a hill.
A person is competing in the Olympics.
Just because they are skiing down a hill, doesn't mean they are competing in the olympics.
exists x1 x2 x3.(a_topic(x1) & down(x1,x3) & n_hill(x3) & Time(x1,x2) & n_skiing(x2) & n_person(x1))
exists e1 x1 x2.(n_olympics(x2) & in(e1,x2) & Actor(e1,x1) & v_compete(e1) & n_person(x1))