1. Each word in the sentence must start with consecutive letters of the alphabet. No skipping letters.
2. Each new sentence picks up where the previous left off. For example, if the last word of the last sentence started with Q, the first letter of the next sentence must start with R.
3. Sentences can be nonsensical, but must have proper linguistic construction. "All bananas continually drink ethanol" is okay; "Apple banana cat Dostoyevsky" isn't.
A Bolivian chief drolly eviscerated Frank's green hippo.