People painting each others arms bright colors.
The people just got showers and are now completely clean.
The subject cannot be painting each other and just got showers simultaneously.
exists e1 x1 x2 x3.(r_bright(e1) & Time(e1,x3) & n_color(x3) & Actor(e1,x1) & v_arm(e1) & all x4.((-(x4 = x1) & n_person(x4)) -> exists e2.(Theme(e2,x4) & Actor(e2,x2) & v_paint(e2))) & n_person(x1) & (x1 = x2) & n_people(x1))
exists e1 s1 s2 s3 x1 x2.(n_people(x1) & a_now(s3) & Manner(s2,s3) & r_completely(s2) & Theme(s2,x1) & a_clean(s2) & a_just(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_get(e1) & n_shower(x2))