The question was asked for a reason, as the leader of the nation, attending what she's turned into a personal five day event for her, she should have known the articles of the Treaty - there are only three of them. Forget the te reo version that she parroted, the English would have done.
She was there after all, to commemorate the signing of the Treaty and should have been fully across its contents.
The articles deal with sovereignty, property rights and citizenship.
In fairness to Ardern, if John Key was asked the same question, his face would have broken into a wide smile but he more than likely wouldn't have even attempted to answer.
And it's fair to say that most of us, if we were asked about the Treaty articles, would most likely have given a blank stare, and that's shameful.
Our political leaders make much of the Treaty of Waitangi being the nation's foundation document but when it comes to its contents most of them have paid lip service to it.
There's no need to enshrine it in our legislation which is meaningless. The document signed in 1840 put in place the foundation for one sovereign nation and all laws passed by it should encompass that.
But at the very least our schools should be teaching our kids to understand the contents of this relatively brief document so that when they grow up to be Prime Minister they'll be the dinner guest worth listening to.