A woman in gray cleans a paintbrush in the bathroom sink.
A woman stands at a sink.
A woman who cleans a paintbrush usually stands near a sink.
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.(at(e1,x2) & n_sink(x2) & Actor(e1,x1) & v_stand(e1) & n_woman(x1))