A woman is observing a sample through a microscope.
A woman looking for something
Not everyone looking at a sample through a microscope is looking for something.
exists e1 x1 x2 x3.(through(e1,x3) & n_microscope(x3) & Theme(e1,x2) & Actor(e1,x1) & v_observe(e1) & n_sample(x2) & n_woman(x1))
exists e1 x1 x2 x3.(a_topic(x1) & for(e1,x3) & n_thing(x3) & Actor(e1,x2) & v_look(e1) & (x1 = x2) & n_woman(x1))