instruction: Is the next sentence syntactically and semantically acceptable?

Rose accompanied.
OPTIONS:
- unacceptable
- acceptable

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

You should leave, shouldn't you?
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

It was obvious that Plato loved Aster obvious.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

It was believed that the earth was round.
OPTIONS:
- unacceptable
- acceptable

response:
acceptable