A big dog tied to a door.
A couple go to a concert.
A dog is never a couple. It's not possible to go to a concert and to be tied to a door simultaneously.
exists e1 s1 x1 x2 x3.(a_topic(x1) & to(e1,x3) & n_door(x3) & Theme(e1,x2) & v_tie(e1) & (x1 = x2) & n_dog(x1) & a_big(s1) & Theme(s1,x1))
exists e1 x1 x2.(to(e1,x2) & n_concert(x2) & Actor(e1,x1) & v_go(e1) & n_couple(x1))