instruction: Is the next sentence syntactically and semantically acceptable?

The boy thought she was happy.

response: acceptable


instruction: Is the next sentence syntactically and semantically acceptable?

It was so awful a picture as it first seemed.

response: unacceptable


instruction: Is the next sentence syntactically and semantically acceptable?

She writes clearly enough.

response: acceptable


instruction: Is the next sentence syntactically and semantically acceptable?

Carmen obtained Diana of a spare part.

response:
unacceptable