instruction: Is the next sentence syntactically and semantically acceptable?

Roses are certain to be planted in the garden by the gardener.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

The travelers have returned from their vacation.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

John talked to any woman who came up to him.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Up what did he look?

response:
acceptable