Group of people holding umbrellas, while walking in the rain.
The group of people are related.
Just because a group of people is walking in the rain while holding umbrellas doesn't mean they are related.
exists e1 e2 s1 x1 x2 x3 x4.(n_rain(x4) & ne_org_group(s1) & a_topic(s1) & of(s1,x1) & while(e1,e2) & in(e2,x4) & Actor(e2,x2) & v_walk(e2) & Theme(e1,x3) & Actor(e1,x2) & v_hold(e1) & n_umbrella(x3) & (x1 = x2) & n_people(x1))
exists e1 x1 x2.(n_group(x1) & Theme(e1,x1) & v_relate(e1) & of(x1,x2) & n_people(x2))