How To Use Crux of the matter In A Sentence

And as poignant as that analogy may be, it is not the crux of the matter.
The crux of the matter is how do we prevent a flood occurring again?
It's not the sort of question I would have worried about before, but now it feels as though this is the crux of the matter.
Buzz, in general, bugs and bewilders me (and leads to alliteration, apparently), but what is the crux of the matter? Blogs and buzz
The crux of the matter lies in what attitude and stand we take and what method we use to handle contradictions.

The crux of the matter lies in our lack of expert knowledge.
Here we get to the crux of the matter. Times, Sunday Times
This is the crux of the matter. Times, Sunday Times
And that is the crux of the matter .
The crux of the matter is that attitudes on the character and scope of planning have changed.
The crux of the matter is the lack of information supplied by the company, analysts said.
The crux of the matter is how do we prevent a flood occurring again?
In womens development the crux of the matter lies in gender equality.
This is the crux of the matter; the answer will determine Europe's future for decades to come.
The crux of the matter is whether the future holds hope for people who prefer to stay at home instead of going abroad to earn a living.
The title highlights the crux of the matter: An increasing number of women in the Middle Arabnews - frontpage
But the crux of the matter is the mysterious “fast atmospheric amplifier” of the CO2 etc. released during deglaciation, which is the old, unanswered question of what the CO2 sensitivity really is. Unthreaded #6 « Climate Audit
Eating well may be at the crux of the matter. Times, Sunday Times
So the crux of the matter is really that there is no such miracle cure.
It was a change in attitude, a spirit of openness and mutual trust because that clearly was at the crux of the matter.