YOU SAID:
My father keeps a handkerchief in his pocket.
INTO JAPANESE
父はポケットにハンカチを置いています。
BACK INTO ENGLISH
My father has a handkerchief in his pocket.
INTO JAPANESE
父はポケットにハンカチを持っています。
BACK INTO ENGLISH
My father has a handkerchief in his pocket.
That didn't even make that much sense in English.