Two athletic men and two athletic women run through a park.
The mixed doubles segment of the race passes through a scenically-designed park.
Two men and two women doesn't necessarily mean they are mixed doubles. Not all parks are scenically-designed.
exists e1 s1 s2 x1 x2 x3 x4.(through(e1,x4) & n_park(x4) & Actor(e1,x1) & v_run(e1) & n_woman(x3) & a_athletic(s2) & Theme(s2,x3) & card_eq_2(x3) & n_man(x2) & subset_of(x3,x1) & subset_of(x2,x1) & a_athletic(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 s1 s2 x1 x2 x3 x4.(n_race(x3) & n_segment(x1) & of(x1,x2) & n_double(x2) & a_mixed(s1) & Theme(s1,x1) & through(e1,x4) & n_park(x4) & a_scenically-designed(s2) & Theme(s2,x4) & Actor(e1,x1) & v_pass(e1) & of(x1,x3))