Simplify the following text for a Grade 13 native English-speaking person.
Original: Frost 's father was a teacher and later an editor of the San Francisco Evening Bulletin ( which later merged with the San Francisco Examiner ) , and an unsuccessful candidate for city tax collector .
Simplified: Frost 's father was a teacher and later an editor of the San Francisco Evening Bulletin ( later the San Francisco Examiner ) , and an unsuccessful candidate for city tax collector .