Two women clean a floor with soap while on their knees.
Two women are maids.
Just because two women clean a floor with soap while on their knees, it does not necessarily mean that the two women are maids.
exists e1 x1 x2 x3 x4.(on(e1,x4) & n_knee(x4) & of(x4,x1) & n_thing(x1) & r_while(e1) & with(e1,x3) & n_soap(x3) & Theme(e1,x2) & Actor(e1,x1) & v_clean(e1) & n_floor(x2) & n_woman(x1) & card_eq_2(x1))
exists p1 x1.(exists x2.((x1 = x2) & n_maid(x2)) & n_woman(x1) & card_eq_2(x1))