英文—Noun Phrase怎寫？

1.
a. Because she is very beautiful, many men want to court her.
b. Because of her beauty, many men want to court her.
her beauty 就係noun phrase.

2.
a. Although he is stupid, he still works very hard.
b. Despite his stupidity, he still works very hard.
his stupidity 就係noun phrase.

好易明同埋用ga ^^