This is driving me batty. Here's the context: “How can they possibly know?” Terry asked. “For one thing, they’re animals and for another they’re dead.” “Neither state prevents them from knowing, I assure you,” I've tried "Neither of which state prevents", "Neither state of which prevents", "Neither of which two states prevent", but nothing looks quite right. Yes, I could change the wording but now I've started I'm determined to use the blasted word. I'm like that. Any preferences as to which reads best? Ta very.