YOU SAID:
Seventeen monkeys jump on a turtle.
INTO JAPANESE
セブンティーンサルは亀にジャンプします。
BACK INTO ENGLISH
Seventeen monkey will jump to the turtle.
INTO JAPANESE
セブンティーン猿は亀にジャンプします。
BACK INTO ENGLISH
Seventeen monkey will jump to the turtle.
That didn't even make that much sense in English.