instruction: Is the next sentence syntactically and semantically acceptable?

He washed ourselves.
OPTIONS:
- unacceptable
- acceptable

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

That arrows don't stop in midair is captured by this theory.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Mary's happy about her work, and John is about his children.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Nurse Rooke has discovered where Anne Elliott stayed.
OPTIONS:
- unacceptable
- acceptable

response:
acceptable