A bride and man in a tuxedo on stairs.
The couple are running
A bride and groom would not be running on stairs
exists s1 x1 x2 x3 x4.(a_topic(s1) & in(s1,x3) & on(x3,x4) & n_stair(x4) & n_tuxedo(x3) & n_man(x2) & n_bride(x1) & subset_of(x2,s1) & subset_of(x1,s1))
exists e1 x1.(n_couple(x1) & Actor(e1,x1) & v_run(e1))