instruction: Is the next sentence syntactically and semantically acceptable?

John promised Mary that he would leave.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Here's a pole for you to kiss the girl who tied the string around.

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

It is important the more you eat, the more careful for you to be.

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Celia brushed her hair.

response:
acceptable