Construction workers are digging a ditch.
Construction workers removing soil.
digging is same as removing
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_dig(e1) & n_ditch(x3) & n_worker(x1) & of(x1,x2) & n_construction(x2))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_remove(e1) & n_soil(x3) & n_worker(x1) & of(x1,x2) & n_construction(x2))