A man in a striped shirt is using a microscope.
The man is working in a lab, looking for a cure for cancer.
You don't have to work in a lab to use a microscope. Not all labs look for cancer.
exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_use(e1) & n_microscope(x3) & in(x1,x2) & n_shirt(x2) & a_striped(s1) & Theme(s1,x2) & n_man(x1))
exists e2 e1 x1 x2 x3 x4.(n_man(x1) & for(e1,e2) & for(e2,x3) & for(x3,x4) & n_cancer(x4) & n_cure(x3) & Actor(e2,x1) & v_look(e2) & in(e1,x2) & n_lab(x2) & Actor(e1,x1) & v_work(e1))