[src NP VP] (,|--) (or) [tgt AUX (NEG) NP]? (4 cases)

wsj_1574 (line 38, ant vp):
Sounds great -- or does it?

wsj_1618 (line 4, ant vp):
But you knew that, didn't you?

wsj_2202 (line 3, ant vp):
You know what the law of averages is, don't you?

wsj_2451 (line 30, ant np):
That's the problem, isn't it?"