answer follow up questions

reference:
2.3 birthdays
Rule B
John March 23
Kelly June 15
Julia April 8

Rule P
August 10 Josh
October 19 Peter
January 27 Angela

answer follow up questions reference 23 birthdays Rule B John March 23 Kelly June 15 Julia April 8 Rule P August 10 Josh October 19 Peter January 27 Angela class=