1) The first smartphone, the IBM Simon, was introduced in 1992 and featured a touchscreen, email capabilities, and apps such as a calendar and calculator.

2) Rihanna, born Robyn Rihanna Fenty, is a Barbadian singer, actress, and businesswoman. She has achieved great success in the music industry with hits like "Umbrella," "Diamonds," and "Work," and has also ventured into the worlds of fashion and cosmetics with her brands.

3) The blue whale is the largest animal to have ever existed, with an average length of about 82 feet (25 meters).

4) The sport of golf originated in Scotland and is played on courses with 18 holes, each with a designated par score.