My dad was also prime minister - ReYep
This is a sentence to be said by a prime minister whose father is / was also a prime minister.

For example
(bkz:Justin Trudeau): He is the 23rd Prime Minister of Canada and his father Pierre Trudeau was the 15th Prime Minister of Canada.

(bkz:Benazir Bhutto): She is the first female Prime Minister of Pakistan and her father Zulfikar Ali Bhutto was also the Prime Minister of Pakistan.

(bkz:Park Geun-hye): She is the first female President of South Korea and her father Park Chung-hee was also the President of South Korea.

(bkz:Sebastian Kurz): He is the Prime Minister of Austria and his father Josef Kurz was also a political figure in Austria.

(bkz:Hery Rajaonarimampianina): He was the President of Madagascar and his father, Jean Gilbert Victor Rajaonarimampianina, was also an important person in politics.