A group of 7 adults paddle while white water rafting.
Some children are rafting in a river.
The group can't be adults and also be children.
exists e1 s1 x1 x2 x3 x4.(while(e1,x3) & n_rafting(x3) & of(x3,x4) & n_water(x4) & a_white(s1) & Theme(s1,x3) & Actor(e1,x1) & v_paddle(e1) & of(x1,x2) & n_adult(x2) & n_date(x2) & a_date_day_07(x2) & a_date_day_07(x2) & n_group(x1))
exists e1 x1 x2.(in(e1,x2) & n_river(x2) & Actor(e1,x1) & v_raft(e1) & n_child(x1))