Woman giving a presentation about a Chevrolet car.
Woman talks about Chevrolet car.
If the woman is giving a presentation about a car, then she talks about said car.
exists e1 x1 x2 x3 x4.(ne_nam_woman(x1) & Theme(e1,x2) & Actor(e1,x1) & v_give(e1) & about(x2,x3) & n_car(x3) & of(x3,x4) & n_chevrolet(x4) & n_presentation(x2))
exists x1 x2 x3 x4.(a_topic(x1) & about(x1,x3) & n_car(x3) & (x3 = x4) & ne_nam_chevrolet(x4) & n_talk(x1) & (x1 = x2) & ne_nam_woman(x2))