instruction: Is the next sentence syntactically and semantically acceptable?

Although in came Aunt Norris, Fanny continued talking.

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

They represented Mary seriously to the dean as a genuine linguist.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

The boat sank.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Who is reading a book that criticizes who?

response:
acceptable