Women are washing their clothes in a river.
Women are washing their feet in the river.
Has to be clothes or feet.
exists e1 x1 x2 x3.(in(e1,x3) & n_river(x3) & Theme(e1,x2) & Actor(e1,x1) & v_wash(e1) & n_clothes(x2) & of(x2,x1) & n_thing(x1) & n_woman(x1))
exists e1 x1 x2 x3.(n_river(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_wash(e1) & n_foot(x2) & of(x2,x1) & n_thing(x1) & n_woman(x1))