A woman and child are brushing their teeth.
woman and child brush teeth
They brush teeth because they are brushing their teeth.
exists e1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_brush(e1) & n_tooth(x4) & of(x4,x2) & n_thing(x2) & n_child(x3) & n_woman(x2) & subset_of(x3,x1) & subset_of(x2,x1))
exists x1 x2 x3 x4.(n_tooth(x1) & of(x1,x4) & n_brush(x4) & of(x1,x3) & n_child(x3) & of(x1,x2) & n_woman(x2) & a_topic(x1))