YOU SAID:

find that needle in that hay stack

INTO JAPANESE

その干し草の中に針があることを知る

BACK INTO ENGLISH

Know that a needle is in that hay

INTO JAPANESE

針がその乾草にあることを知る

BACK INTO ENGLISH

Know that the needle is in that hay

INTO JAPANESE

針がその乾草に入っていることを知っている

BACK INTO ENGLISH

I know that a needle is in that hay

INTO JAPANESE

私は針がその乾草に入っていることを知っている

BACK INTO ENGLISH

I know that a needle is in that hay