1) The first sound film, "The Jazz Singer," was released in 1927 and marked the transition from silent movies to "talkies."

2) The world's largest diamond, the Cullinan, was discovered in South Africa in 1905 and weighed over 3,000 carats.

3) The word "island" contains two vowels: I and A.

4) The Cricket World Cup is held every four years and features teams from around the world competing for the prestigious title.