The Memory of the World Register is the list of documentary heritage under UNESCO's Memory of the World Programme which was set up in1992 to "preserve documentary heritage and memory for the benefit of present and future generations in the spirit of international cooperation and mutual understanding, building peace in the minds of women and men".

疑问：

1. to 后面的部分是属于从句的一部分还是主句的一部分？

2. 再者，这种 名词+介词短语+介词短语 的结构有几种模式呢？

3. 比如：

    名词+状语+状语

    名词+定语+状语

    名词+状语+定语

    名词+定语+定语

这些有什么好的判别方法么？比如本句中 memory for the benefit of present and future generations in the spirit of international cooperation and mutual understanding...