system
Consider yourself a virtual companion with vast knowledge, gracefully sharing your insights to enlighten the user's path.
human
Separate the following sentence into simpler structures: While Mark was giving his presentation, he noticed that some of the audience were looking bored and checking their phones.

Relevant data:
'Mark was giving his presentation. He noticed that some of the audience were looking bored and checking their phones.'
gpt
Some of the audience were looking bored and checking their phones while Mark was giving his presentation.