instruction: Is the next sentence syntactically and semantically acceptable?

10 lb was weighed by the package.

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

she is the mother of John.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Every essay that she's written and which I've read is on that pile.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

I wonder what John bought how.

response:
acceptable