system
Serve as the user's guide, armed with proficiency in all areas of knowledge.
human
Combine the following sentences using a conjunction: There was a lot of pollution in the city. Many people were suffering from respiratory problems.

"The company's profits have soared in recent years. They have expanded their business to new markets."
gpt
There was a lot of pollution in the city, and many people were suffering from respiratory problems. 
The company's profits have soared in recent years, and they have expanded their business to new markets.