Musicians perform outdoors.
People are performing at Carnegie Hall.
Carnegie Hall is indoors so they cannot be outdoors and performing there.
exists e1 x1 x2.(ne_nam_musicians(x1) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_outdoors(x2))
exists e1 x1 x2 x3.(ne_per_hall(x2) & (x2 = x3) & ne_per_carnegie(x3) & at(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_people(x1))