A pharmacy technician is reading a prescription.
A pharmacy tech is sitting doing nothing.
A pharmacy technician is reading a prescription.  A pharmacy technician is  busy reading.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_read(e1) & n_prescription(x3) & n_technician(x1) & of(x1,x2) & n_pharmacy(x2))
exists e1 x1 x2.(-exists e2 x3.(for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_do(e2) & n_thing(x3)) & Actor(e1,x1) & v_sit(e1) & n_tech(x1) & of(x1,x2) & n_pharmacy(x2))