A group of boys is watching another boy walk away.
Group of boys fighting.
Fighting and watching are two different things.
exists e1 s1 x1 x2 x3 x4 x5.(a_away(s1) & Manner(e1,s1) & Theme(e1,x4) & Actor(e1,x1) & v_watch(e1) & n_walk(x4) & of(x4,x5) & n_boy(x5) & -(x4 = x3) & n_walk(x3) & of(x3,x2) & n_boy(x2) & n_boy(x2) & of(x1,x2) & n_group(x1))
exists e1 s1 x1 x2.(ne_org_group(s1) & a_topic(s1) & of(s1,x1) & Actor(e1,x2) & v_fight(e1) & (x1 = x2) & n_boy(x1))