instruction: Is the next sentence syntactically and semantically acceptable?

I spared him the trouble.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Bill believes Anna and himself to be similar.
OPTIONS:
- unacceptable
- acceptable

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

John has taken to the library.
OPTIONS:
- unacceptable
- acceptable

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

These books disappoint me.
OPTIONS:
- unacceptable
- acceptable

response:
acceptable