instruction: Is the next sentence syntactically and semantically acceptable?

Poseidon would run away, if the executioner murdered Hera.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Stephen persuaded it to be easy to please Kim.

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

I brought John a razor to shave himself with.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

His friend learned dancing.

response:
acceptable