two joggers near a river.
Two people are enjoying themselves.
Just because the people are near a river doesn't mean they are enjoying themselves.
exists x1 x2.(a_topic(x1) & near(x1,x2) & n_river(x2) & n_jogger(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_group(x2) & Theme(e1,x2) & Actor(e1,x1) & v_enjoy(e1) & n_people(x1) & card_eq_2(x1))