YOU SAID:
did you know speed walking is a sport
INTO JAPANESE
スピードウォーキングはスポーツだと知っていましたか
BACK INTO ENGLISH
Did you know that speed walking is a sport?
INTO JAPANESE
スピードウォーキングがスポーツであることをご存知ですか?
BACK INTO ENGLISH
Did you know that speed walking is a sport?
That didn't even make that much sense in English.