[求助]OG11 自测 49，50 请教定语从句的用法

OG11 自测题中

49.Stella Adler was ont of the most infulential artists in the American theater, who trained several generations of actor.

答案说，who修饰了 American theater，所以错误

==》 非限制性定语从句在GMAT中几乎都是直接指向前面的那个名词，所以这里说 who 指向 American theater

而50题中

The recoring industry associations of North, America,Japan, and Europe hope to create a standardized way of distributing songs and full-length recordings on the internet that will protect copyright hoders and foil the many audio pirates. 

答案说画线部分正确

但that跳要修饰的是way，这里为什么不说that可以被误解修饰internet而出现歧异，错误呢？

==》 这里是 A of B that 的限制性定语从句结构。

         在GMAT中具体的that 修饰 A还是B 要根据意思判断，两种结构都有对的。