user: What is the biggest threat to the great barrier reef?

assistant: Climate change is the biggest threat to the Great Barrier Reef. Major heat waves over the past 30 years have increased coral bleaching and is now expected to occur yearly. Coral bleaching increases the likelihood of disease and is therefore destroying reef communities.

user: Identify which instrument is string or percussion: Boomwhacker, Ukelin

assistant: Boomwhacker is percussion, Ukelin is string.

user: In which year did the Portuguese first arrived in Brazil?

assistant: The Portuguese first arrived in Brazil in the year of 1500.