A man in a tuxedo standing in front of a large group of formally dressed youths.
A man runs in front of youths.
One cannot be standing and runs at the same time.
exists e1 s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & in(x1,x2) & in(x2,x4) & of(x4,x5) & of(x5,x6) & n_youth(x6) & Theme(e1,x6) & v_dress(e1) & r_formally(x6) & n_group(x5) & a_large(s1) & Theme(s1,x5) & n_front(x4) & n_standing(x2) & of(x2,x3) & n_tuxedo(x3) & n_man(x1))
exists e1 x1 x2 x3.(in(e1,x2) & of(x2,x3) & n_youth(x3) & n_front(x2) & Actor(e1,x1) & v_run(e1) & n_man(x1))