Man cutting concrete with a saw.
Individual cutting a rock sustance for work with a powertool.
Just because Man cutting concrete with a saw does not indicate that he is cutting a rock sustance for work with a powertool.
exists e1 x1 x2 x3 x4.(a_topic(x1) & with(e1,x4) & n_saw(x4) & Theme(e1,x3) & Actor(e1,x2) & v_cut(e1) & n_concrete(x3) & (x1 = x2) & n_man(x1))
exists e1 p1 x1.(exists e2 x2 x3 x4 x5.(with(e2,x5) & n_powertool(x5) & for(e2,x4) & n_work(x4) & Theme(e2,x2) & Actor(e2,x1) & v_cut(e2) & n_sustance(x2) & of(x2,x3) & n_rock(x3)) & Topic(e1,p1) & Actor(e1,x1) & v_individual(e1) & n_thing(x1))