I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "Canada's constitution, being a 'mixed' or hybrid constitution (a constitution that is partly formally codified and partly uncodified) originally did not make any reference whatsoever to a prime minister, with her or his specific duties and method of appointment instead dictated by "convention". In the Constitution Act, 1982, passing reference to a "Prime Minister of Canada" is added, though only regarding the composition of conferences of federal and provincial first ministers."? 

What happened after the year 1982 in terms of the Canadian constitution?