A man in a striped shirt is sharpening a tool on a grinding mill.
A man has on protective goggles.
Not all men using a grinding mill wear protective goggles.
exists e1 e2 s1 x1 x2 x3 x4.(Theme(e2,x3) & Actor(e2,x1) & v_sharpen(e2) & on(x3,x4) & n_mill(x4) & Actor(e1,x4) & v_grind(e1) & n_tool(x3) & in(x1,x2) & n_shirt(x2) & a_striped(s1) & Theme(s1,x2) & n_man(x1))
exists e1 s1 x1 x2.(on(e1,x2) & n_goggles(x2) & a_protective(s1) & Theme(s1,x2) & Actor(e1,x1) & v_have(e1) & n_man(x1))