YOU SAID:

I steal people’s kneecaps

INTO JAPANESE

人の膝蓋骨を盗みます

BACK INTO ENGLISH

steal a person's kneecap

INTO JAPANESE

人の膝蓋骨を盗む

BACK INTO ENGLISH

steal someone's kneecap

INTO JAPANESE

（人）の膝蓋骨を盗む

BACK INTO ENGLISH

steal someone's kneecap