I'm having difficulty with the extraction of information from sentences containing the word "because."
I was analyzing a text about the advantages and disadvantages of open-plan offices. When asked, "Why are open-plan offices good?", the answers extracted from the text, especially those before the word "because," seemed straightforward. For instance, "open-plan offices are cheaper for companies because they use less electricity" led to the primary advantage being "open-plan offices are cheaper for companies." The book's answer keys confirm this.
However, when discussing disadvantages, the extraction became inconsistent. From the sentence "Some people do not work well in open-plan offices because they are noisy," the primary disadvantage taken was "they are noisy" (from the "because" clause) rather than "Some people do not work well in open-plan offices." Yet, in another sentence "researchers think that people get ill more easily because they work near each other," the primary disadvantage extracted was "people get ill more easily" (from the independent clause).
Why is the information from the "because" clause prioritized in one instance and not in another? Is there a grammatical or semantic rule that I'm overlooking?
Here's the text for reference:
Open-plan offices: new research
People all around the world work in offices. Some people work in small offices for one or two people, but a lot of people now work in open-plan offices. In these offices, people work together in one big room. New research from Australia shows that there are advantages and disadvantages to these offices.
The research shows three reasons to have open-plan offices. Firstly, in open-plan offices a lot of people can work in a small area. Secondly, it is easy for people to talk to work colleagues because they are in the same room. Finally, open-plan offices are cheaper for companies because they use less electricity.
The research also shows some disadvantages. Some people do not work well in open-plan offices because they are noisy. It is also difficult to talk privately in open-plan offices. Finally, researchers think that people get ill more easily because they work near each other.
Any insights would be greatly appreciated!