YOU SAID:
billy boy is the son of Mrs billy boy
INTO JAPANESE
ビリー少年は夫人ビリー少年の息子であります
BACK INTO ENGLISH
Billy boy is located in the son of Mrs. Billy boy
INTO JAPANESE
ビリー少年は夫人ビリー少年の息子に位置しています
BACK INTO ENGLISH
Billy boy is located in the son of Mrs. Billy boy
That didn't even make that much sense in English.