instruction: Is the next sentence syntactically and semantically acceptable?

Is whether he played the piano known?

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Her stepmother always clad her in black.

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

John loaded the bricks onto the truck.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

I found to be delicious some fruit which I picked up on the way home.

response:
acceptable