domain name system – what are the record fields in dig “ANSWER SECTION”?

What are the fields in a dig output ANSWER SECTION:?

$ dig www.stackoverflow.com
…
;; ANSWER SECTION:
www.stackoverflow.com.  138     IN      CNAME   stackoverflow.com.
stackoverflow.com.      51      IN      A       151.101.65.69
stackoverflow.com.      51      IN      A       151.101.1.69
stackoverflow.com.      51      IN      A       151.101.193.69
stackoverflow.com.      51      IN      A       151.101.129.69
…

(snipped output)

I did not find a concise explanation within man dig.