1) The largest known dinosaur, Argentinosaurus, weighed around 70-100 tons and measured up to 100 feet in length.

2) The global push for COVID-19 vaccination campaigns has been a significant focus, with the development and distribution of vaccines to combat the spread of the virus and protect public health.

3) The Federal Reserve System, often referred to as the Fed, is the central banking system of the United States.

4) The word "banana" contains three vowels: A, A, and A.