A man operates a drill while working on the window of a building.
a man drilling on the window of a building
In order to be drilling the window you must know how to operate a drill.
exists e2 e1 x1 x2 x3 x4.(n_window(x3) & while(e1,e2) & on(e2,x3) & of(x3,x4) & n_building(x4) & Actor(e2,x1) & v_work(e2) & Theme(e1,x2) & Actor(e1,x1) & v_operate(e1) & n_drill(x2) & n_man(x1))
exists x1 x2 x3 x4.(n_window(x3) & a_topic(x1) & on(x1,x3) & of(x3,x4) & n_building(x4) & n_drilling(x1) & of(x1,x2) & n_man(x2))