Saw blade being sharpened on revolving sharpening wheel by a dark-skinned man.
A carpenter is working.
Not all men are a carpenter.
exists e1 p1 x1.(ne_nam_saw(x1) & exists e2 s1 s2 x2 x3 x4.(Actor(e2,x4) & n_man(x4) & a_dark-skinned(s2) & Theme(s2,x4) & on(e2,x2) & n_wheel(x2) & of(x2,x3) & n_sharpening(x3) & a_revolving(s1) & Theme(s1,x2) & Theme(e2,x1) & v_sharpen(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_blade(e1))
exists e1 x1.(Actor(e1,x1) & v_work(e1) & n_carpenter(x1))