A woman in gray cleans a paintbrush in the bathroom sink.
A woman sitting on a toilet.
A woman can not clean a paintbrush in the sink and be sitting on toilet at the same time.
exists x1 x4 x5.(n_sink(x4) & of(x4,x5) & n_bathroom(x5) & all x2.(n_paintbrush(x2) -> exists s1 x3.(a_topic(x1) & in(x1,x4) & in(x1,x3) & for(x3,x2) & n_clean(x3) & a_gray(s1) & Theme(s1,x3))) & n_woman(x1))
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_toilet(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_woman(x1))