A group of dark-haired girls are walking together.
a group of boys plays soccer
it must be either girls walking, or boys playing
exists e1 s1 s2 x1 x2.(a_together(s2) & Manner(e1,s2) & Actor(e1,x1) & v_walk(e1) & of(x1,x2) & n_girl(x2) & a_dark-haired(s1) & Theme(s1,x2) & n_group(x1))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_soccer(x3) & of(x1,x2) & n_boy(x2) & n_group(x1))