Hi,
I think it depends on where you are, and yor ability to see/sense these things.
For example, Europe has a massive history of the arts, and there is a much larger respect for all arts than there is in America ... where culture is a joke ... actually it's a place with many cultures, and no structures, except idealistic religious thoughts and concepts depending on which part of the country you are ... somewhat similar to other parts in the world, with the exception that in America, there is more education and awareness of a world outside your local area, and in many places around the world ... you have no idea of what some things are ... when I cam to America in 1965, all I knew was radio ... and all of a sudden here is TV ... and in color ... and I had never seen one, and the first one I saw was at the airport in Rio de Janeiro (Galeao - spelling) and in one was a schedule of some sort and in the other a cartoon?
Structure, for me, based on Portugal, Brazil and America, is an illusion ... we create a social ideal, and think it is the right one for everyone including our cats and dogs! The culture side of things, is depending on the knowledge of the history ... in the small towns in Brazil that we were at, it was non-existant altogether and people were just nobodies with no "soul" behind them to speak of. It felt like ... we're just another animal that gets domesticated and tomorrow will die. And the structure, of course, is what is left behind? An invisible matrix that somehow we all follow and some of us might even call it "God".
Nature, is something that I would not consider as strong in this equation, since your ability and mine, to find an individualized personna, is very difficult and not something that a whole family unit, or social group, might aprove or even appreciate. But seeing the Natives in Brazil and how calm and self sufficient they were, helps define that word differently ... their nature was definitely different than ours ... but it could just as easily be confined to their social development, and not a separation from it.
So sorry that I am not as socially strong on these things ... but my studies tend to be more quotidian in value than idealistic ... to me, the history becomes this and that, and the arts define the rest. Without the arts and the history, one would be hard pressed to find a culture ... and this is the history of Africa, for example ... total destruction of its history, in favor of a new stracture, not to mention Europe. But the cultural side of things tends to suffer in this process. The past dies a quick death. And we're left with no history!