YOU SAID:
People went home after lunch
INTO JAPANESE
人々は昼食後帰宅した
BACK INTO ENGLISH
People came home after lunch
INTO JAPANESE
人は昼食後に家に帰った
BACK INTO ENGLISH
A man returned home after lunch
INTO JAPANESE
一人の男が昼食後帰宅した
BACK INTO ENGLISH
One man came home after lunch
INTO JAPANESE
一人の人が昼食後に帰った
BACK INTO ENGLISH
One person left after lunch
INTO JAPANESE
昼食後に一人残った
BACK INTO ENGLISH
One person left after lunch
That didn't even make that much sense in English.